Lesbian: A woman who is attracted to other women. This obviously also includes trans women attracted to other women - just in the same way as white women, black women, nerdy women, and all other women attracted to other women.
Gay: A man who is attracted to other men - which of course also includes trans men. Gay is also more and more becoming used as a general term for anyone attracted to anyone of a different sex than their own.
Bisexual: A person who is attracted to both men and women - or a person who is attracted to both people of the same sex as them and to people with a different sex from them.
Transgender: A person whose gender identity is different from the sex assigned at birth.
Queer: A person who does not identify as a straight cisgender individual (mostly). This is often used as an umbrella term for LGBT+ individuals to label themselves without having to narrow down their sexuality or gender expression to something more specific/limiting. Note: The term is still considered as a slur among some LGBT+ people and, as other labels, shouldn't be used to label others if they themself don't label themself as such.
Intersex: A person whose body is not definitively/exclusively male or female. Intersex isn't a reflection of sexual attraction or gender identity.
Asexual: A person who is not attracted in a sexual way to people of any gender. This does sometimes overlap with aromantic - as in not feeling romantic attraction toward anyone of any gender - and sometimes it does not.
Pansexual: A person whose sexual attraction is not based on gender and who can potentially be attracted to anyone, no matter their gender.
... and there's many, many more labels that people choose to use to express their sexual, gender, and romantic identities and expressions.
P.S. The top titles/headlines of "L" and "P" are invisible due to the pride flag having 6 colors and this page having more sections than that, meaning that the first and the last letters had to be turned invisible; though pan folks are used to that (as are bi folks).