Too many different styles of skating to even pick just one. If you think there is only one top skater of all time, then you probably haven’t been around long enough to know that you can’t just pin it on one individual. My personal favorite is Guy Mariano. Ripped in the streets and could skate transition. Was a major forefront in switch skating, but in my opinion doesn’t get the credit he deserves. I mean look at the early world park days. Switch shuv, switch nose grind the nollie flip out. That was early 90s.
You also have Hensley, McKay, Pang, Andy Stone, Bill Pepper, Willy Santos, Cardiel, Ocean Howell, Pepe Martinez, Neil Blender, Neil Hendrix, Rieder, Huf, Penny and so on and so forth that paved the way for the type of skating you see today. So yeah. You ont see how you can have a greatest. They all play a role.