she affected everything when she broke down and remade the omniverse, but it seems the no more mutants spell didn't affect all realities equally as even astonishing x-men showed alternateverses with mutants going about their business normally. I'm not sute the AoA suffered decimation either. cant really recall it being mentioned during the uncanny x-men crossovers. lots of realities visited by the x-treme x-men have no shortage of mutants either, plus there's the fact a lot of alternate futures had booming mutant populations in them.
Gender: Male Location: somewhere within time & space
Wanda crashed the entire Omniverse in on itself,
only 616 (Wanda's playground) was spared.
That was her power spilling out of 616 which had become 58163.
When Wanda re-arranged 616 into 58163 she made a tear in it,
and her power flowed out re-arranging likewise but without control hence, the Chaos Wave.
Now,
aside from several cool feats to and fro,
at the end, as in, "No More Mutants"
she consciously: turned 58163 back into 616,
fixed the Omniverse which means she unfolded the mesh it was,
(it was "torn to pieces")
and extracted the mutant gene from 90% of the race across nearly all Timelines.
(literally only several were spared) - I'll get the details.
She also affected the entire mystical plane as witnessed by Strange & Beast.
Wanda did all that in one swoop with basically a thought.