But what exactly does a male who believes he "experiences the world being perceived by most everyone as a woman" really have in common with women (female adults)?

That is what he has in common with women: he experiences the world being perceived by most everyone as a woman. The significance of that is debatable, of course!

I and many other women feel that males who describe themselves as transsexuals AND transgender alike all completely overlook, ignore, downplay our experience as female humans beings and treat US with hostility and resentment. Because you/they cannot comprehend OUR own experience. Many refuse to even acknowledge that we have any inner experience whatsoever that is separate and unique and which males cannot appropriate or simulate.

It’s understandable why you and other women feel that way. We seem to be sharing some feelings in common, though, which I find interesting!

But just because the "transsexual" males you are describing here don't have the same experiences as "most trans people" doesn't mean that the life experience and experience of self of those male "transsexuals" can be assumed to be the same as - or to have any relationship to - the life experience and experience of self of actual women (female people) either.

No, of course not. An assumption like that shouldn’t be automatic, as would be the same as assuming there is no relationship or any sameness of self and/or life experience of women (female people).

It seems to me that you keep taking the experience of male "transsexuals" like yourself and projecting it on to those of us who are female in order to make it appear as though your experience as a specific subset of male human beings is essentially the same as the experience of the world's female people - or at least very, very close. When from my perspective, there's a universe of difference so vast that our experiences are basically chalk and cheese.

I suppose that’s natural with differing perspectives, the same thing might be given more than one explanation or interpretation. It seems like that can even be an issue with facts, in that they’re only accurate from a specific perspective (eg, GC places importance of biology over identity because of femaleness/maleness as functions or biological states of being/existing primarily, but that choice is based on a specific perspective).