I have one that angles out, I believe it's a Curt, and it allows me to fit a full size spare, 265 70 17. I don't think you could fit much larger under there.
Yeah I’ve got a spare 265 70 17. Do you know which model you have? Or class III or IV?
Curt seems to be the way to go. Install sounds like it’s truly bolt on, no drilling. Drawtite had a few reviews complaining of fit.
I have the Draw-Tite with the straight bar on my EB and I carry a 275/70r18 spare. I’ve removed the “horns” that hold front of the tire. The departure angle is affected, but the hitch is sturdy enough to work as skid.