if you have Leather Stuff why would you use either Trim Restorer or Natural Look on leather????
Yes you could and I have seen some very high end detailers use either on leather and interiors, but it would depend on what the end goal is...
If you want a high gloss and slick interior, Trim Restorer will give you that look with out the greasy or oil feel ....
If you want low but natural shine, then Natural Look is the right choice ...
Leather Stuff will leave a matte look, very little to no shine/ gloss at all...