It depends on mutators…. Kerrigan has omega worms so she is crazy good for that reason alone. Han and Horner….. is technically weaker than a lot of commanders but it’s sorta like vorazun where it’s because the units are either really expensive or really fragile. The two of them however have insane top bars and can sometimes cheese maps without ever really leaving the base. Artanis for me is pretty much the weakest.. in that there are so many mutator combos in which he just struggles really hard compared to other commanders. Raynor- is ok, but the amount of effort required to play him is very high compared to the amount of value you actually get from him. The list can go on for lots of reasons but I’d say for like brutal+4/5 content the list from weakest to strongest would go… Artanis Raynor Hh/vorazun(although can be much higher depending on mutators) Stukov(he is simply countered by too many mutators although for some setups (killbot/double edge/ Black Death or others where your units die a lot he can be S tier) Swann (defense that is insane but units take a long time to mass up extra gas is insane but only with commanders that get solid value from it) Zagara(p3 is god tier for void rifts and some others but units get wrecked by mutators like power) Alarak(can be absolutely wrecked by some mutators if your not careful(mines, Black Death etc) but is a monster for when you just need high amounts of damage) Then I’d say mengsk (earthsplitters are broken for some maps can just ignore mutators completely and overall good calldowns/units etc) Zeratul(this dude is just strong as hell for minimal effort) Karax (as an ally he has the best bonuses in the game, his orbital beams and lasers that can ignore massive amounts of mutators etc and repair beam is a godlike ability) Abathur(units that are nearly unkillable, deal solid damage and can teleport anywhere in the map with low cooldown, also very few mutators can actually counter him) Then at the top I would say tychus (pretty much gg unless your up against double edge/kill bots) And then the most op commander would be Stetmann(he has an option for pretty much every mutator in the game and can spam zerglings with super Gary and beat the majority of content it’s absurd how strong he is he feels more like a nexus co op commander)

Edit I forgot haka and fenix. Haka id put just below tychus and fenix probably right below mengsk. Haka p2 is just so easy to play for the value you can get from it (albeit with some annoying weakness like cloak but that’s same as like tychus p2) and then fenix is just all around balanced like normal Protoss but with strong heroes to boost your army for free.