I see this example everywhere, that Mystique could gain Sabretooth's powers but not Nightcrawlers, when she shape-shifts. I wonder what other person's powers could she gain.
Along with Wolverine and Sabretooth, she could gain all of the dominant species powers.
Angel, without the power to heal people with her blood but she can do blood transfusions since she has healing factor although it is probably not as strong as Angel's.
Angel Salvadore, she could probably rearrange her organs to give her acid spit like a fly.
Emma Frost, without the telepathy but the diamond form
Toad, without the power to control amphibians