The bottom two black ones look like they belong to arcade games to me... they look like what was on my old space invaders cab and my old Mrs Pac-Man

The steel doors in the first photo look like game plan.

The black doors:

Top door looks like a late classic stern door (MPU-200 era).

Bottom left looks like a bally 6803 door.

Bottom right is a bally video arcade door, although baby pacman and granny and the gators used a similar style. The wiring harness should help indicate what it might be for.

That bottom right door is from an early Midway arcade game, around Space Invaders/SI Deluxe, Space Zap or Galaxian - or possibly a Midway rifle/etc game. That circle insert used to be where Midway placed their Start buttons, and for their first few videogames that had the start button on the control panel, they just put a blank there. Then starting with ~ Pac-Man, they omitted the cut-out entirely.