What other options for sharp photos at box speed?
First, let me recommend you a reading of The Film Development Cookbook, if you like grain you'll find quite interesting knowledge there, also the The Darkroom Cookbok is a good introduction. It won't deceive you.
Options personally I'd consider:
> As Bormental points, first you may dilute Xtol to decrease its solvent effect for an slightly coarser grain. Xtol delivers smooth grain without killing ultimate sharpness, which looks contradictory but it is. But you may want something coarser...
> You may simply add sodium sulphite to rodinal to adjust its solvent effect to your taste (
https://www.photrio.com/forum/threads/rodinal-and-sodium-sulfite.6804/)
> Use Xtol for the half of its developing time, then rinse well with water and then throw Rodinal in and develop for the half of the Roodinal development time. You mostly will get a mid point between Xtol an Rodinal. Further by adjusting the time share of Xtol vs Rodinal you may finely tune the grain depiction.
> Use Rodinal + Xtol mixture. While in general mixing developers may have severe drawbacks (can it even explode ?

) the Xtol + Rodinal has many followers. You will geet deep blacks as if a toe cutter was used, less shadow detail but an impressive look, grain will also be adjusted from the different formulations.
https://www.flickr.com/groups/819042@N23/
> Use other developers, like D-76, D-76 diluted, HC-110, T-MAX that may deliver a mid point.