[@KRIEEEG]
Frankly if you're hellbent on having a live mount, your best bet would probably be some sort of giant insect. Heavy, armored exoskeleton, probably some redundant legs, probably carnivorous, might even be capable of super clumsy flight. The angles of such a creature, combined with its natural armor, would also probably make it more resistant to ballistic weapons than a wolf with comparable armor. Top speed won't be as quick as a vehicle still (though a giant centipede would be able to fucking haul ass), though tbh I don't really think that a live mount is going to be outperforming a vehicle in the speed department unless it's a Kobold on a cheetah or something.

[@KRIEEEG]
I will not leave your jetpack out of it any more than I'll leave my necrocycle out of it! Both are examples of the sort of vehicle / mode of transport that can exist in the setting, and not bringing them up when talking about the tech level / degree of sophistication of transport is just not a good plan.