I'm confused...
Boss 1 is EOC EOW Skeletron Goblin Army and Skeletron Prime,
Boss 2 is WoF and twins,
Boss 3 is Queen Bee and Ocram
Boss 4 is Destroyer and Frost Legion
Boss 5 is Plantera
Boss 6 is Golem and Pirates
Boss 7 is Lunar Boss
boom there you go.
It's different because Queen Bee theme was introduced in Console release, and there it was Boss 4, but they made it Boss 5 when it was on PC.
Boss 1: EoC (PC), Skeletron, Goblins, Skeletron Prime, EoW, King Slime, Duke Fishron
Boss 2: WoF, Twins
Boss 3: BoC, Destroyer, Frost Legion
Boss 4 (PC): Golem, Pirates
Boss 4 (Console): EoC (Console), Queen Bee
Boss 5 (PC): Queen Bee
Boss 5 (Console): Golem, Pirates
Plantera and Lunar Boss are unranked