The truth is that, when it comes to sizing (and many other things), there really isn't a great deal of difference between women's clothes and men's clothes. Sizes for clothes are usually not
standardized, with the one exception I can think of being shoe sizes which do have general guidelines for labeling that almost all brands follow (even though they still vary).
What this means is that one brand's "women's large" is not the same as another brands "women's large." This seems to be a particular problem with women's clothing from what I have seen and heard from others, but really this is present across all clothes. Even within a brand, there's not going to be perfect uniformity to finding correctly fitting sizes. There is, unfortunately, a lot of trial and error to it if you're shopping in person at a store that does not have a changing room (or one that you are comfortable using).
Here's the thing though: this is a problem that cis women face just the same! They might have more experience dealing with it, but I kinda doubt there are any women who have gone mall shopping for clothes who wouldn't
complain about inconsistency and sizing. It's a very universal thing!
My point is to say, inclusive brands are great but I somewhat doubt they are a necessity. I've done research into "crossdresser clothes" and ones aimed specifically at MtFs and I find there's really not a significant difference between those and clothes marketed towards / made with the intention as being worn by cis women. Clothes are literally just clothes.
People's bodies have a lot lot of variation. Gender dimorphism is only one of these, and it's honestly not that
big of a difference.
Now, of course, if you need the specialized clothes you need them! I don't want to just assume that you haven't tried clothes marketed to cis women.
With that said, are you sure you don't fit in women's sizes? A lot of larger stores seem to be putting more effort into providing plus size sections and giving them closer to the diversity of clothes you'd see outside of the more limited offerings they're usually given.
I don't wish to pry for anything you don't want to share but is it purely size that's the issue or a distaste with how it falls on your body? Or is it just a problem with finding stuff that appeals to your fashion tastes that also fits you?
My size at the moment in womens sizes are 3xl/4xl and i have difficulty finding those around me because I searched sites and these are unusal sizes that are worn.
I think Target is in Pennsylvainia and would ship out there at least if you're not close to a store. They carry plus size women's brands that usually go up to 4xl. I've never looked at this section in person, unfortunately, so I don't know if it's as good as online. They have a good return policy and shipping is free at $50+ I think.
H&M also carries some women's clothes up to 4xl. I haven't been to one in person in years though and I've never shopped online for them so I can't vouch for more than that, sorry.