I have used following Raspberry Pi models:
  * Pi Zero
  * Pi Zero W
  * <del>Pi Zero 2 W</del>
  * Pi 1 A+
  * Pi 1 B+
  * Pi 2 B
  * <del>Pi 3 A+</del>
  * Pi 3 B
  * Pi 3 B+
  * <del>Pi 4 B</del>
  * <del>Pi 5</del>

I've used the Raspberry Pies mostly for data logging (USB-serial). 

===== I²C =====
I've connected Raspberry Pies with 5V Arduinos and have burnt a few Raspberries just because the I<sup>2</sup>C voltages are differently pulled up.

It's possible to use any pair of GPIO pins as software (bit-banged) I<sup>2</sup>C host.