As for Irene Adler, the “Chaos War: Dead X-Men” mini by Claremont and Simonson revelead that she not named after the Holmes character, but, in fact, actually *IS* the same character from Holmes lore.
Ugh, really? I guess Claremont never read the part where Doyle refers to her as “The LATE Irene Adler”, then.
Comic Book Easter Eggs – X-Men Pop Culture References! – Comic Book Resources