Sarah Houston wrote:

I'm looking to buy a self-propelled mulcher mower that can be set to cut
the grass much higher than regular mowers, like maybe 4-5" tall?

Who makes something decent in that?

I don't know what changing height does to the mulching action, but if you
can't find one easily I'd think any handy mechanic should be able to
relocate the wheels or change to larger ones without too much problem.