To name a few off the top of my head:
Free Methodist
The Wesleyan Church
Independent Methodist
Church of God (Anderson)
Orthodox Presbyterian
Salvation Army
The Church of the Nazarene
Evangelical Presbyterian
Christian Reformed Church
And you will note that the Presbyterian Church in America and the Southern Baptists are represented by two Korean congregations, which may (or may not) view things differently than the majority of those congregations in the U.S.