High top tier: Kaido, Big Mom, Sakazuki, Borsalino, Kuzan, Mihawk, Gear 5 w/AdCoC
Mid Top Tier: Shanks, Blackbeard, Dragon, Issho, Aramaki,
Low Top Tier: Awakened Kid, Awakened Law,
And then you have high high tiers which are the YC1 and such. Jury is still out on the Shichibukai.