Around halfway through The Force Awakens, the gang meet up with Maz Kanata, an orange colored seer who claims to be able to tell people by their eyes.
What species was she?
This piece of information is deliberately left out of currently available materials. We don't know and we won't know in near future.
In the movie, you don’t learn these things [her species and homeworld - insertion mine], but I know that these are things that are coming out in other venues.
J.J. Abrams - source
Both look possible to me... Though it is true that the sources for the Kumumgah are all now categorized as "Legends" and the Dressellian canon data is far from complete. I don't see any reason why Disney would not reinstate or expand species developed in the legends, just under their own terms. For example The Legends data says that Dressellians where quite tall but this is not necessarily true for the canon. Many species also shrink with age so that could also be a factor. Maz species not being mentioned is not actually that unusual as the canon materials quite often avoid confronting that question directly on first meeting a character.
Possibly Kumumgah? They could be the ancestors of both the sand people and the Jawas, which would explain both her pirate and hoarding sides.
Is there any evidence in canon supporting this?
As far as I can find, no. I'm just making speculations based on her appearance and personality traits as:
The only visual representation of Kumumgah I could find was this:
It's a stretch, but could be a fit.
There is also this, which was in Anakins room on Tatooine (the Kumumgahs home planet):
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