He's not a consensus top ten player but I'd say he's in the argument for being in the tier after Lebron/Curry/Durant/Westbrook/Harden/Kawhi. We'd call these guys "Top 5."
"Top 10" is just shorthand for guys who are a bit worse than those but substantially better than "Top 20" players like Isaiah Thomas, Blake Griffin, Klay Thompson, Gordon Hayward etc.
You don't actually count to 5, 10, or 20, the lists are fuzzy and subjective, so that would be pointless. It's better to think in terms of tiers.