Geez... I would have thought any of those would be in before Frampton
America - sound like every other band in the genre.
Bachman-Turner Overdrive - legit nominee
Blood, Sweat, & Tears - legit nominee
Joe Cocker - who’d he influence?
Grand Funk Railroad - legit nominee
The Guess Who - popular but influential?
Iron Butterfly - I love them but they’re one song
Jethro Tull - legit nominee
The Amboy Dukes/Ted Nugent - not as influential as Frampton but a contender.
Steppenwolf - two songs
Three Dog Night - super popular but influential?
None of these omissions are as criminal as Iron Maiden.