Fair enough, I was writing specifically about the sauna scene, which is almost entirely en El Centro. Things change regularly so I haven't written about the sex clubs extensively so as not to send people to businesses that are no longer there.
There are multiple sex clubs and gay-themed nights around Laureles. Some, like the private club at Avenida 80 at Calle 43 don't have actual names. (enter from rear door, yellow building on Calle 43) Others pop up and move around, like Spa Med 33. And there are mainstays like Sillon Rojo and La Casa del Gurú which host regular events. If you want to the very best private events, you should probably check out Angels Club, however they have an annual membership requirement.
I would suggest asking politely about "eventos o parches gay" in popular bars like Chiquita, Happy, or Donde Aquellos. That should lead you down the rabbit hole of the inner workings of Medellín's gay scene. There are plenty of events that happen regularly in the old dancehall spaces around Centro-La Candelaría. You just need to meet someone who is plugged into that scene.