Patreon is far form the only site affected, and please use the partial list below as your starting point for password changes you make today.
It's a not a bad idea to use this as an excuse to change your passwords on your more vital services, too, just in case. If you're not already using a password manager, this is a great time to go get 1Password (my favorite) or LastPass to automate a big chunk of this chore.
Be safe! And thank you for being a patron.