Some lesser known(Minus Petrucci) players that I love.
Nick Johnston
Jakeb Zytecki w/ Disperse
Monte Montgomery
John Petrucci
Mark Holcomb w/ Periphery solo at 9:30
Fun fact Holcomb is John Petrucci's nephew.
Petrucci is great but I prefer Ty Tabor of Kings X of the 90s prof guys. Maybe because I liked Kings X as a band and didn't like Dream Theater. Also,if you can find one, the Tabor signature Yamaha was a great guitar. Used to have one about 15 years ago but sold it with the intent of getting the baritone version but couldn't find one.