There are several options to choose from, but most data brokers will know that small custom domains go back to a certain or small group of people.

That being said, this is a good list:

https://www.reddit.com/r/privacy/comments/108wzvg/what_is_th...

Not sure I trust the longevity of some of them, though. I do use https://temp-mail.org/en/ or other similar services for some logins for some services I'm not afraid to lose access to, though (especially for places likely to spam me).