I have ~16 different passwords that I regularly use for various sites/accounts/etc. that I enter manually (without saves/password managers). Those are what I use probably on a bi-weekly basis. They do rotate and change every few months. There are a few that I just have saved in a text file that I copy pasta because I doubt that if anyone hacked me they would be interested in logging into those accounts. If anyone hacked those sites, they probably wouldn't be able to tell if my password was plain text or encrypted.
Two, one for root and one for everything else everywhere.
Come at me black hats.