LGBTQ+ TERMINOLOGY

Defining terminology for elementary school age students: https://welcomingschools.org/resources/definitions-lgbtq-elementary-school

https://www.adl.org/education/resources/glossary-terms/definitions-related-to-sexual-orientation-and-gender-identity

Frequently updated, PFLAG National's Glossary of Terms is comprehensive with definitions that are both nuanced and succinct:
https://pflag.org/glossary

Mx. Titles

This title is pronounced like the word "mix" and is used as a non-gendered title (as opposed to Miss/Ms/Mrs/Mr). Though it is used by non-binary people (as well as others), I would not assume that a non-binary person uses this title. I would introduce myself and my pronouns and then ask "what are your pronouns?" And perhaps use the same exchange for what title a person uses. For example, "I use the title Ms. as in Ms. Etheridge. What title do you use?"