As far as recessive combos go, I think you will probably find the most with ghosts. I don't even want to bother trying to list all of them. Here is one I don't think too many people are very aware of that I am pretty fond of.
Pretty much every main stream gene out there has been crossed with Hypos. It would be easier for you to ask about a particular morph, to see if it has been crossed. A couple of the very few I can think of that have not been posted ever are:
Hypo Sable
Hypo Spotnose
Hypo Lavender Albino
Hypo Desert
Hypo Phantom/Mystic
and probably most of the three gene dominant crosses may not have seen Hypo yet due to the long odds.