I played for many years and at all times had someone who's work I absolutely loved...only to move on to the next.
So not a list of all my favorites, but a list of the skills I coveted chronologically.
It started with randy Rhodes and crazy train, offset by the acoustic "Dee". Lots of talent and a good mix of sounds and skills.
He was dead before I began playing, and his sound got me in to it.
Van Halen of course was next, but that was all flash and little substance. The tapping and speed were the big skills I admired.
For a long while, dave Murray and adrian Smith of Iron Maiden were on heavy play rotation. Nothing earth shattering but their harmonized solos were really tight.
Then, james Hetfield. Palm muting, fast and articulate right hand, and one of the most interesting blends of classic/metal songwriting that had been seen. Master of puppets was the peak.
For a while, I was way in to joe satriani. Great sound, lightning fast, could do anything anyone else could do (talking about you, vai) but wasn't compelled to break speed records or Cram too much in at the cost of losing a groove.
Then, early Dime bag. Listened to cowboys from hell as a demo I got for free at tower records, and it didn't leave my tape deck for 3 months. Heavy, articulate, and the pinch harmonics were off the charts.
....then grunge and shredder saturation kind of killed the guitar evolution and I put the toys away.
Not even close to my top all time list... but the guys who stood out in big ways.