io9 rounds up some (most?) of the new canon’s Legends imports, or at least those that came up since the old Expanded Universe actually became Legends. I can’t really tell if this is complete, since most of them are fairly minor.
I would say Thrawn is about the most major, since the concepts of things like a “New Republic” and “Leia and Han’s kid going dark” are fairly broad. And in any case, this list is likely to grow with Aftermath: Empire’s End coming out in a matter of weeks.