You go with something universal, to appeal to the broadest range of people.
If there's one you genuinely love that is going to widely resonate, that's your song, imo; if the goal is to make steady income.
...
I'm going with "Candyman," by Sammy Davis Jr.
It's magical, delightful, and fun.
"Timeless classic" type ish.
Yet, not something so gay that it will turn many away.