1. WotLK
2. Vanilla WoW
3. WoD
4. TBC
5. Cata
6. Legion
7. BFA
8. MoP
9. Dragonflight
10. Shadowlands
I found the Dragonflight one to be pretty boring despite its visuals, but at least it wasn't as offensively bad as the SL one. WotLK being #1 is a given.