Terraria Calamity Bosses Progression

Just finished calamity on expert; here's my rating of the bosses (subject to change) : r/CalamityMod

Terraria: Everything You Need To Know About The Calamity Mod

tModLoader - Calamity Mod, Page 208

Superbosses - Calamity Mod Wiki

tModLoader - Boss Checklist - In-game progression checklist., Page 25

Bosses - Official Calamity Mod Wiki

Calamity Mod All Bosses and Minibosses in a Nutshell

Bosses - Official Calamity Mod Wiki

Tier list of every single calamity boss (with explanations)

Bosses - Official Calamity Mod Wiki