I'm not sure how many science-minded folks can see this since I know Kitty, Mr. Stark, and Dr. Banner can't. But I thought I'd offer this for thought. Maybe it'll help with figuring out how these alternate reality things work.
Before we couldn't see
anyone we're close to, people were talking about not seeing people from their own realities. They said we couldn't see anyone from the same reality as ourselves. The thing is,
nobody is from "my" reality, but I still couldn't see any other mutants or the Avengers. I do know for sure that we're from different realities. The only reality I know any kind of name for is Kitty's home: Earth-616.
( tl;dr? )So to summarize, these realities aren't the same realities, but still were separated:
Earth-mine: Just me
Earth-616: Kitty, Molly and Old Lace, maybe Logan
Earth-something: Mr. and Mrs. Stark, Ms. Carter, Mr. Barnes, Steve Rogers; Charles, Erik, Raven, Hank; Tony Stark, Ms. Potts, Mr. Barton, Ms. Romanoff, Mr. Coulson, Ms. Lewis, Dr. Banner, later on Steve Rogers; Sif, Thor, and Loki; sometimes Rogue and other Logan and Kitty
Earth-something-else: Peter Parker
And for the record, trying to find anyone from those realities and anyone I'm close to isn't working even with my level of telepathy, even when I try searching the astral plane, and even when I tried skimming across side realities which I really don't like doing.