Unos for development. Once developed the project will get a stand alone 386 on a custom board.
Megas for development. Hardly ever use it. Spare for my 3D printer, too.
ESP8266 (several dash numbers), ESP32 for projects that need WiFi and learning networking.
ESP32 cam just cause I was curious. Will mess with it when I get time.
tiny85 for any project that does not need many pins.