As I've found rhythm guitarists very overlooked in most guitar communities, I'd like to ask who your favourite player is when it comes to rhythm guitar (from what I've seen you don't seem to be the "? Rhythm guitar? Who gives a s**t!" kinds of people
).
A lot of people seem to think that rhythm guitar requires less skill to master.
Sure, it may seem so at times, but when it comes to really MASTERING rhythm guitar, I'd say it's equally tough, or even tougher, than lead guitar.
Anyways, my personal favourite is Malcolm Young, he's just brilliant. Also he's the riffing master of AC/DC, which a lot of people don't seem to believe, since they only see Angus.