In junior high, I was mostly a consumer of MAD and CRACKED with an occasional magazine rack perusal of SICK but can’t recall a purchase of it. By high school and into college, I was a regular purchaser of National Lampoon including the original printing of the “Vacation” story and the “we’ll shoot this dog” issue.
As to political bent, MAD & CRACKED were equal-opportunity offenders of the conventional culture with Lampoon having the most obvious lefty slant.
Is Mad not published any more? They did a great Rocky parody.
I believe it was the one with the "Bulgemobile" fake ad.