A common trend today, to make words more inclusive of gender, is to use an “x” to replace the vowel (or letters) that would make the word refer to women or men. In languages where this is a commonality like Spanish, it makes sense. (But as a non-Spanish speaker, I’m not going to endorse the usage of “x” in gendered words. I’ll allow a native-Spanish speaker to be the judge on how to make Spanish words gender-neutral.) When it comes to English though, this makes less sense. English words, in general, are pretty gender-neutral and gender-inclusive, except words that are meant to describe gender(s) of course.
I have come across a myriad of people who like to use the term “womxn” to describe people who are not men. This group includes women, both cis and trans, as well as non-binary people. As someone who is a feminine non-binary person, I honestly get very annoyed when I am called a “womxn.” You can’t de-gender a term that is literally a gender, especially used to describe those of us who are typically ID’d as “women.” This term feeds back into feminine non-binary people actually being “women” and it doesn’t feel inclusive of non-binary people who are masculine or pass as men. If you want to refer to a group of people and don’t want to include men, saying “non-men” or even just saying “women and non-binary people” is perfectly fine.
I do want to emphasize that this is my opinion on this and that other gender-diverse people may disagree and that’s okay. Gender-diverse people are not a monolith and we’ll have different opinions on different things. It’s always important to ask if someone is comfortable with something rather than just assuming because someone else said something, so make sure to ask the gender-diverse people around you what they’re comfortable with and follow that.