Friends, Romans, countrymen!

Ladies, Gentlemen, Esteemed Peers. (if you want to be serious)

Ladies, Gentlemen, and you special assholes (if you’re in a group of close friends and trying to be funny).

source: I am non-binary.

Edit: David Bowie’s answer to this question.

Greetings programs.

Honored motherfuckers

Comrades, folks, fellow apes

Theydies and gentlethems

I think the best greeting for this is just “everyone”

it’s how the announcements on my trains changed over time, starting from addressing “ladies and gentlemen” to “hello everyone”

Reduce to one word: “Folks.”

Ladies, Gentleman, and avid pronoun collectors.

Here are some fun greetings. Not all of these include every person:

• “Guys, gals, and non-binary pals”
• “Girls, gays, and theys”
• “Friends, Romans, countrymen”
• “Ladies, gents, violents, and the rest of you”
• “Ladies”, followed by a pointed stare to the men in the room for at least five seconds
• “All miscreants gathered here”

Some that work generally:

• “Distinguished guests”
• “Esteemed guests”
• “Folks/people”
• “You all/all of you/y’all”
• “Good people/folk here today/tonight”
• “Everyone/everybody gathered here today/tonight”

Et cetera is fairly professional, although some might consider it mildly dismissive

Heathens if you’re going for a more fun tone.

“Howdy y’all!” is a complete sentence.

“Hello, everyone!”

People refer to non-binary people as “n-b’s” or “enbies”, however you want to spell it.

I’ve seen people say this: “guys, gals, and non-binary pals”.