[Ether]

Here at CD, "skid steer" usually refers to a drivetrain with non-steerable wheels that steers by giving a different speed command to each side (left/right) of the drivetrain.

Tank Drive, Arcade Drive, and "Cheesy Drive" all refer to the Operator Interface (OI).

Those IOs are usually used with a skid steer drivetrain, but if you wanted to, you could implement any of those OIs with a mecanum or omni drivetrain.

If you did that, however, the OI would not give the operator access to the full range of motions that a mec or omni is capable of executing.