Im not fimiliar much with Yes, Crimson or Genesis and never leaned toward keyboard dominated music. I liked to rock and guitar dominate stuff that was heavier, so my favorite old progressive songs are by less technically skilled hard rock bands that just poped out a few more progressive songs here and there, like Tull, Cooper, Heep had a couple, Zepp had a few, Focus had a few (I liked), even Queen, Rush was a turning point, then Crack the Sky and Kansas. I was never really crazy about all that synth stuff, Jan Hammer was really the first I heard that was right for me with synth improv.
Loved Round About but it was all Yes had for me, the same with Court of the Crimson King and even Karn Evil 9 1st pt2. Im sure theres hidden gems there I just never heard or gave a chance. Like I enjoy all of Brain Salad today but really only a couple times a year is enough.