"other" Storage on ipad pro

Lightroom maintains its own “Local Storage” which is a separate container from iPad Photos. Material can be imported, manipulated - and then exported back to the iPad Photos album.

Deletion from iPad Photos does not delete the Lightroom storage space - which your screenshot suggests consumes a significant proportion of your total storage space. The “other” category includes all non-system data cached/stored in App private storage - including Lightroom’s Local Storage.

If you need to recover storage from Lightroom, you will need to delete photos from the Lightroom Local Storage folder - within the Lightroom App itself. This storage area are cannot be deleted from iPad settings - or directly accessed from the iPad Photos App.

I hope this is helpful in resolving the problem.

Your iPad Photos storage (for the native Photos App) is “logically” separate from the Lightroom Local Storage on your iPad, but both consume storage space from the available memory on your device.

Are you certain that any other Apps installed on your iPad are not consuming a proportion of the “Other” space?

Your screenshot suggests that LR is consuming about 100GB (in the region of 20% of your total usable storage space) - so you may some other Apps similarly caching data in their own private storage spaces. If any other Apps are storing data in their own “pools”, this must be deleted from within each of the offending Apps.

So your problem is now resolved?