meh...they are just so old. In the 60's, there were so many forces pulling music, all looking for the payday. You still had the Rat Pack and the big band era, CW was probably the number 1 seller in records, and we had Rock n Roll, Elvis Presley style and we had POP or bubble gum music, then we had Rock which was in a transition ... some of those groups in your list like REO, The beatles and Styx where the groups that moved towards harder and more talented pieces.
Riding the Storm out was a monster rock song for its day. It might be a bit pedestrian today, but dude, those boys rocked that shit back then.