Nowhere near the top 5 or top 10. Recency-bias like a mug here and the media is driving the narrative. He's a very skilled offensive player, but zero defense. Sounds like Dan Issel, Tom Chambers, etc.
No order, but from what I've seen in my lifetime, I can't rank him over any of these players who actually played against other elite centers regularly and performed at that level. He 100% wouldn't have the same success if he had to square up against any of these centers. They would've all gave him the business.
Kareem
Wilt
Shaq
Hakeem
Shaq
David Robinson
Moses Malone
Pat Ewing
Bill Russell
Alonso
Dikembe
Brad Daughtery
Bill Walton
Robert Parrish
Bob McAdoo
Dwight Howard (early career)
Artis Gilmore
Embiid (would be on this list, but he can't stay healthy)