From the article:

I’m using LGBTQIA2S+ as a shorthand for lesbian, gay, gender non-conforming, genderqueer, bi, trans, queer, intersex, asexual, agender, two-sprit, and others (including non-binary people) who are not straight, cis, and heteronormative. Julia Serrano’s trans, gender, sexuality, and activism glossary has definitions for most of terms, and discusses the tensions between ever-growing and always incomplete acronyms and more abstract terms like “gender and sexual minorities”. OACAS Library Guides’ Two-spirit identities page goes into more detail on this often-overlooked intersectional aspect of non-cis identity.