Instagram "Personals" account relaunches as Lex, a dating and social app targeted for people who are lesbian, bisexual, asexual, womxn, trans, genderqueer, intersex, two-spirit and non-binary

Here's a quick rundown as I understand them. I'm not an authority by any means, but I'm active in LGBT communities. I'm also doing this from the top of my head, rather than searching these up, as a way of giving a sort of "on the ground" view rather than a more formalized/academic view that might come from looking up stuff. For anyone reading this with a better knowledge/understanding than me, if I'm off the mark, let me know!

Lesbian

You probably don't need this one spelled out, but it refers to a woman who is primarily interested in other women romantically and/or sexually.

Bisexual

Again, this is fairly common but there's some nuance to it. For some this refers to someone who's interested in men and women romantically and/or sexually, though for many it means an attraction regardless of gender identity. Some people identify as "pansexual" rather than "bisexual" as a way of affirming this, which removes some of the ambiguity of "bisexual" as a term. "Pansexual" is also explicitly inclusive of trans and non-binary people, whereas "bisexual" isn't fundamentally inclusive though it certainly can be and often is.

Asexual

Asexual refers to someone who experiences either no or relatively low amounts of sexual attraction to others. Asexuals can experience romantic attraction and will often identify not only as asexual (or "ace") but as a sub-type based on their romantic orientation -- heteroromantic, homoromantic, bi/panromantic, or aromantic (denoting someone who doesn't experience romantic attraction).

There's also demisexual, which usually falls under the ace umbrella and refers to a person who does experience sexual attraction, but only after strongly connecting with a particular individual.

There's also the label of "gray" asexuals, which are asexuals who do experience sexual attraction but not enough to define a sexual identity around it. This could be someone with a very low sex drive or someone who has only experienced sexual attraction a very few times in their lives.

Womxn

I am not super familiar with this term, and I could be VERY off the mark with this. Based entirely on seeing it only a few times in context and making assumptions based off of those limited moments (I'll admit I've never actually looked it up directly), my understanding of it is that it is similar to "pansexual" in that it is openly and explicitly inclusive of trans individuals.

For trans women, there's often a question of whether they'll be welcome in women's spaces or whether their needs or experiences will be considered or respected. Using "womxn" in place of "women" explicitly affirms this, much in the same way that a rainbow flag lets LGBT people know they're welcome somewhere.

Trans

Refers to someone who has a gender identity that is different from the body they were born with. Historically the focus has been on people who fully transition from one end of the gender spectrum to the other (male-to-female and female-to-male used to be preferred terminology). Recently the term has opened up a lot and includes more than just people with male or female gender identity. It also used to be focused primarily on transition (e.g. living and presenting as one's identified gender), but is now more focused on the identity itself. As such, a male-presenting person who identifies as female for example would still be considered trans regardless of whether or not they've transitioned to present as female.

Genderqueer

This is used by people who don't identify as explicitly male or female. It could be someone who identifies as somewhere in-between, someone who identifies as both, someone who identifies with neither, or someone whose gender identity is fluid and can change over time. As of late the term "non-binary" has taken the reigns for this idea. I don't see "genderqueer" nearly as much as I used to.

Intersex

This refers to someone who is born with properties of both male and female bodies, or with certain elements missing. Historically many intersex people underwent surgeries or hormonal treatments as infants or children to "correct" their sex and make it align with explicitly male or female expectations. This is, thankfully, less common than it used to be but can still be an issue.

Two-spirit

This is one I'm not intimately familiar with and I've never actually met someone who (to my knowledge) identifies as two-spirit, but my understanding is that it's a Native American term for people who do not fit the gender binary -- a culturally specific form of "non-binary."

Non-binary

See "genderqueer." As far as I know there's not really a difference between these, though I could definitely be wrong on that.

If I've made any errors or missed the mark, please let me know! Also if anyone reading this has any questions, please ask! I love to talk about this stuff and don't mind answering questions, even ones that might be difficult or tense.