Agree 100%.
Nirvana might have reshaped/revolutionized/ruined (depending on who you ask) rock music, but any schmoe can play Cobain. Heck, he was so wasted most of the time, we can actually play it better than him.
Agree on the first category
Agree on the second. Again Clapton is my favorite.
Add George Harrison on the third.
Page gets this rap quite a bit. I think Page is an amazing guitarist. But when I think about Zepplin I dont think about amazing musicians. Dont get me wrong theyre all good. But thats it they all carry their weight. Page isnt Zepplin. I think more about amazing lyrics/singing and compositions when I think of Zepplin.
heck the only way I can carry a tune is in a wheelbarrow...I guess I just never followed him that much