I've been trying out Beekeeper Studio [https://www.beekeeperstudio.io/] recently, and like that it supports both MySQL and PostgreSQL (and others I don't use). The interface takes a little bit to get used to, but it's been pretty powerful for me.

Before that, or when I'm in a rush to just get something done as I adjust to Beekeeper, I use Postbird (an Electron app) [https://github.com/Paxa/postbird]