here’s one example:
left is idle, right is cutoff
and this is Ab
the problem you face doing this is that you need to go vertical to provide a support for the arm and a guide for the detents (cutoff, idle & AB)
you can’t do that without increasing the height of your throttle assembly (at leats not realistically)
so you will end up with a much more massive throttle assembly, mostly suitable for a cockpit and not quite for a desktop solution
Undestanding the use of detents and levers might be confusing at first, so i made a crude quick video about that a few months ago: