And excerpts from this link below help to provide a brief thumbnail "who's who" re the leaders of Armstrongism's break-off groups:
WHO'S WHO IN BIBLE PROPHECY...
This list includes "...those from pseudo-Christian organizations (so-called Christian groups that adhere to doctrines outside mainstream Christianity). This comprehensive list of individuals is meant to help you identify sound teaching on Bible prophecy and prophecy topics only." [Disclaimer: I haven't fully reviewed this Web site, and likely do not agree with all of its assessments...]
* "Richard F. Ames Television presenter of the Living Church of God (LCG) and co-host of "Tomorrow's World," another so-called end-times TV broadcast and bi-monthly magazine subscription. He is second in command to the organization's head, Roderick C. Meredith. He has eccentric views of Bible prophecy (i.e., LCG followers are "Philadelphians" and will be protected during the great tribulation for 3 1/2 years), usually found in his numerous publications or published online at lcg.org. He has a book about prophecy in the Middle East, and teaches that his church members should not participate in juries, politics or military service. He rejects orthodox beliefs of heaven and hell, the Trinity, salvation by grace alone and the bodily resurrection of Jesus."
* "Herbert W. Armstrong Late founder of the Worldwide Church of God (WCG). Prior he was a minister in the Church of God Seventh-Day (COG7) that had splintered from the Seventh-Day Adventist (SDA) church. When his teachings began to disagree with COG7 doctrine, he started his own denomination called the Radio Church of God, which became the WCG. The organization produced the "Plain Truth" magazine and the "World Tomorrow" radio and TV programs. While his theology was rooted in Seventh-Day Adventism, he also taught the false doctrine of British-Israelism, later known as "Armstrongism" which claims the ten "lost" tribes of Israel were actually Anglo-Saxons. This unbiblical doctrine is not only anti-Semitic, but wrongly contends that Jews are Israelite imposters. He was the self-proclaimed "apostle" of the "only true church on earth," with an emphasis on linking Bible prophecy to contemporary world events, but with his own twist (just as SDAs do today). He regularly predicted specific times for the return of Christ when previous predictions failed. He claimed that he was a fulfillment of prophecy and that he and his "church" alone were preaching the truth. More than 30 splinter groups formed after his death."
* "Garner Ted Armstrong Late founder of the Garner Ted Armstrong Evangelistic Association, he was removed from the Worldwide Church of God by his father Herbert over control issues and immorality. He then organized the Church Of God International (COGI) where he was also removed by leadership for immorality. He again created a new organization, the Intercontinental Church Of God (ICG) under the umbrella of the Garner Ted Armstrong Evangelistic Association. He also hosted the Garner Ted Armstrong television broadcast, and was the self-proclaimed "Ezekiel Watchman" (main prophetic spokesman for God on earth). His son, Mark Armstrong, now heads the ICG, and claims it is the only "true" church on earth."
* "Fred R. Coulter Founded the Christian Biblical Church of God (CBCG) in 1983 after he broke off from the Worldwide Church of God (WCG) in 1979. He claims that his organization teaches directly from the Scriptures, not from traditions of men, and restores original Christianity for today. He speaks regularly on end-times events, teaches from the traditions of Seventh-Day Adventists (Sabbath-keeping), and claims the Jews in Israel today are not the same as the Jews described in the Bible. He has studied Greek for many years, eventually producing his own translation of the New Testament in 2007, then publishing the "Second Edition of The Holy Bible In Its Original Order" in 2009. He is working on a similar version for the Old Testament. Apparently the present order, inspired by the Holy Spirit, is not quite right. He also claims the Trinity is a false doctrine, all found at cbcgindianapolis.org."
* "Gerald Flurry Pastor General of the Philadelphia Church of God, founded in 1989 on the doctrines of the late Herbert W. Armstrong. Having served under Armstrong as a minister in the Worldwide Church of God before sweeping doctrinal changes, he never wavered. His wacky prophecy teaching continues on "The Key of David" television broadcast, through the monthly magazine, "The Philadelphia Trumpet," and via booklets. He claims, "God placed me into the office of a prophet," and "I am intimate with God in a way no one else is directly." He also states, "In fact, 'king' and 'counselor' apply to the office I hold." He probably eats manna too."
* "Roderick C. Meredith He founded the Global Church of God (GCG) in 1992 which he claimed was the "true church." He was eventually dismissed over authority issues, and then established the Living Church of God (LCG) in 1998. He was one of the first five evangelists ordained in 1952 by Herbert W. Armstrong. Meredith believes God chose him to "re-establish the true church" and that his members are the "spiritual heirs of the original Jerusalem Church of New Testament time." He denies the doctrine of the Trinity and he follows Armstrong's prophecy teachings. Members must keep Old Testament laws as part of their salvation. He co-hosts the TV program "Tomorrow's World," and publishes a magazine by the same name. Both are used in recruiting potential members for LCG."
* "David C. Pack Pastor General of the Restored Church of God (RCG) which he founded after the Global Church of God (GCG) "disfellowshipped" him. He claims to stand for "precision of doctrine" and claims to know what the "true church" is today. Another offshoot of Herbert Armstrong's Worldwide Church of God, he is another "founder" of a growing number of so-called "true churches" in America. He states that the two witnesses of Revelation will come out of his church, will come under his supervision, and he will train them for their 3½ year mission on earth. He broadcasts the television program "The World to Come" and offers "The Real Truth" magazine at thercg.org."
* "John Ritenbaugh Head of the Church of the Great God (CGG), another breakaway group that formed as a result the disintegration of the Worldwide Church of God (WCG) following the death of Herbert Armstrong. The CGG identifies itself as "non-Trinitarian" and "Sabbath-keeping" as do other WCG splinter groups. His organization publishes "Forerunner" magazine, and runs truegospel.org. He focuses on bringing "the true gospel" to the world as God's divine government is shortly going to be established on earth. Like all of the WCG splinter organizations, the CGG makes several claims of having "truth" along with delusional interpretations of end-times events."
* "Ronald Weinland Former minister in the Worldwide Church of God (WCG), then a minister in the United Church of God (UCG), he now heads the Church of God - Preparing for the Kingdom of God (PKG). His church observes the 7th day Sabbath and the seven annual holy days in Leviticus 23, with a purpose to support, educate, and warn the scattered Church that was formerly united in the Worldwide Church of God. Several years ago he declared himself a prophet, and then falsely predicted the end of the world in 2008. He now claims to be the pastor of God's Church on earth, and is appointed to be God's final end-time prophet to the world. He also claims to be one of the two witnesses of Revelation 11, and that he will be slain in Jerusalem. More of this utter nonsense can be found at cog-pkg.org and ronaldweinland.com."
When Herbert W died, did not other men take over who led his congregation back into Trinitarian Christian beliefs while others took of and tried to continue Armstrong’s beliefs.