Classic Games
For our purposes “classic” means a game first introduced no later than the mid-90s and still actively supported by the publisher. In most cases these games are in their fourth, fifth, or even sixth incarnation, though some have changed more extensively over the years than others.
While longevity doesn’t necessarily mean a game will be a good fit for you and your group, it does indicate a big enough customer base to justify ongoing development. So your odds of finding other players who have at least heard of one of these games is relatively high.