Tierlist from most annoying to least and why!

Goatman - It's very hard to see it coming and especially worse on mobile where the screen is small
EPIK DUCK - Literally just another Goatman but with an indicator
Dozer - Why do I need to say this, it always appear whilst outrunning Carnation and slowing you down, nightmare for mobile players. Also can penetrate Safezones (idk if they fixed yet)
Heed - He's just very buggy
Elkman - Imagine you're halfway in a empty room with no walls, and you see him. Impossible to outrun
Rue - AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Doppel - Woah
Doombringer / Joey + Kookoo - One just screams while you're holding a lantern (if exposure isn't on) and another forces you to put it away.
Zomber - Must shoot with a gun, and has some annoying knockback
Sorrow - You might be a goner, especially in parkour rooms
Carnation - Forces you to go to a certain area, just interrupts your speedrun
Slight - Blocks your way
Tar + Pits - Prevents you from progressing if you are terrible and walljumps or at mobile controls
Litany + Slugfish - Lowest on list, they make your experience not as hard