Another types of bogeys

If a bogie is motorized or non-motorized depends on if the script is "sending" force to the axles of that bogie, or not. So it is a "question of script"

What do you mean with "non-turning" bogie?

I guess that he means bogeys that are "fixed", like in old two-axle-tramways.

Then it's no longer a bogey but simply a fixed axle.

Well, you can define two one-axle-bogies.