(All quirks can be useful with a proper strategy but some are obviously better than other)
D tier-Hagakure and Sato level quirks they have very limited use and aren't that strong
C tier-Sero and Jiro level quirks they have decent power or utility but has plenty of flaws and weaknesses
B tier-Kirishima and Kaminari level quirks they have a really effective ability that can be used in plenty of situations but has one or two flaws that hold it back
A tier-Todoroki and Momo level quirks there incredibly versatile with both utility and power having one of these powers almost instantly makes you a powerhouse.
S Tier-All Might and All For One level quirks there completely broken and will probably never be used in the show and for good reason

D Tier-Hair Property, Body acceleration/deceleration, Entrapment, See Through,

C Tier-Liquid Path, Iron Assassin, Body Growth, Serpent Queen/King, Overdose, Cloak, Continuous, Maximum,

B Tier-Magnetism, Madness Aura, Bone Armor, Restore, Virus, Oxygen Boost, Desert, Exploding Bubble, Fixed Position, Steal, Organic Creation, Trajectory, Shockwave, Dissolve, Blood Intoxication,

A Tier- Forecast, Object Phasing, Shadow Hunter, Fire Jet, Wind Amplification, Property Copy, Mix and Match,

S Tier-Infinite Motion, Body Thief, Undead,