As a small start up when we ran into a similar problem while using google domains, they gave us a very hard time with bad support...something we could not afford then. I dont have a good alternative but wanted to mention this experience with google domains. Hope that helps.

Yes, all of these possibilities are under investigation. We have just recently secured ICANN approval to be a domain registrar. With our scale, this has become important now.

Google is their direct competitor.

Google is a company with a horrendous customer support history.

Maybe domains registered more recently work differently, but my Google domains use a random user account generated by Google for eNom (the provider they were contracting with at the time). That makes each domain it's own virtual customer (I couldn't just login to eNom or Google see a list of all my domains). I need to log into Google Domains as a separate account for each domain, and then that takes me to GSuite which links to eNom.

Also, last I checked, unlocking a domain for transfer to another registrar required emailing Google/eNom. There's no interface for it. For a while the entire UI to choose to cancel a domain just disappeared as well.

I would not recommend Google Domains.

Could you elaborate on your view that Google Domains is the most professional company for this kind of issue?

Google doesn't even use google domains.

Well when Google bans you, you will simply find no recourse. Google is pretty shitty company when support is needed.