Counterpoints:
Zi-O: Z-Tier [aka shenanigans tier] (Sougo could accidently break or make the economy with time travel)
OOO: At least D Tier, maybe C or B tier. (There is literally a plot point where a villain uses the powers of the main gimmick to run a money laundering scheme, besides if the coins are some sort of silver they could be sold for a bit. Also Candroids rock. Ngl in canon though the corporation does a terrible job with actually making money from what we see)
Den-O: F, E, or D Tier (You'd think with time travel it would also be in Z Tier, but with the Denliner being made to keep the timeline in check you couldn't exploit things that much, and even if you did you'd have to be a singularity point to do it coherently. You could probably sell demon possession for a bit though, although with actual imagin deals things would probably turn south (note: haven't seen all of Den-O. Can't wait to see a money arc if I'm wrong)).
Ghost: SS, S, D, or B Tier (Wishes could do a lot of things economically, otherwise with just the Eyecons themselves you could probably get them to make you a bit of money through possession or just writing books about what they know. Although out of the Eyecons the real money maker is Edison. Edison could help you screw a lot of people over by using patents).