And it turns out that there is already an itch.io user with the username "Ioncom". It seems like the person only used it as a username though and never intended to release any games, but it sucks that the username is already taken. Probably should've checked to see if the name was already taken on itch.io before making it my company name.

I could just make my itch.io username "ioncomofficial" or something like that. I'm not changing the name of my company though. I'm too prone to the suck-cost fallacy for that to happen.