Thanks to Babykim for sharing, Russian player z1000 made a list based purely on XP, damage and win rate, not personal impressions of the author, according to statistics from 25 percent sample of the RU cluster.
The list of ships is in the decreasing order of goodness (>), the last ships in the list are the worst performers. Separately on carriers, Japanese carriers perform better on all tiers, except Tier 7 where Saipan is the best performer.
List of Best Ships by Tier
Tier 2 – Umikaze
Tier 3 – Bogatyr > Nassau
Tier 4 – Isokaze > Imperator Nikolai I
Tier 5 – Fujin/Kamikaze/Minikaze > Gremyashchy > … > Bogue
Tier 6 – Arizona > Cleveland > … > Bayern > Mutzuki > Ognevoi
Tier 7 – Scharnhorst > Gneisenau > Blyskawica > Flint > Atlanta > … > Hatsuharu
Tier 8 – Bismark > Mikhail Kutuzov > Atago > ARP Takao > … > Tashkent > New Orleans (Hipper and Eugen are also bad)
Tier 9 – Friedrich der Große > Roon > … > Kagero > Baltimore
Tier 10 – Große Kurfürst > Khabarovsk > … > Shimakaze > Des Moines