Crop settings are not supported in presets yet - the feature request to be able to save crop settings (not just aspect ratios) has been suggested before.
The only workarounds I know for saving crop settings are:
1. Keep dummy photos with the crop settings you want, then copy & paste or sync crop settings when needed.
2. Use the XMP-Edit plugin, which is obsolete and hasn't been maintained for a long time (but may still work).
3. Use text editor macros or the like to apply crop settings to the xmp file, then read metadata (wont work with DNG or RGB formats (neither will xmp-edit)).
All are more trouble than they are worth to me, but thought I'd throw them out there for you.
PS - I know of no workarounds for saving aspect-ratio proper.