As for The Ramones, some people have stated there were other musicians and bands that predated them. Be it Death, The Stooges (and thus Iggy Pop), The Velvet Underground, Lou Reed, New York Dolls, Joey Ramones’s early band Sniper, Wayne/Jayne County and the Backstreet Boys/Electric Chairs and even David Bowie at some point (let’s not forget that he and Mick Jones have admitted his influence and oddly enough Paul Simonon doubled for him before).
That’s not to say some of those bands lacked any influence or mention. Like I said, some of the Ramones and the Clash were influenced by David Bowie and Malcolm McLaren managed both the New York Dolls and the Sex Pistols. It seems parsimonious to say that The Ramones was possibly the most recognisable proto-punk band. (I’d say David Bowie and the Spiders from Mars were commercially successful in their own right.)
There was a proto-punk band called The Punks and Blondie could also be considered proto-punk, but The Ramones were eventually recognised as such. For some reason, especially commercial reasons at that (Death and Jayne Country were probably too left-field to be readily embraced by the mainstream). I think that’s the easiest one.