ah, that's not time signature. That's just the snapping of the song.
It's a little hard to give advice cause I don't map standard much, but generally speaking I think it's best to stick to the most commonly used snappings, and try to use slider-repeats for the less common one? I could be wrong but I think that's how most standard mappers approach it in the average song.
Though honestly I think it depends on what makes the most sense for the song, I'd have a hard time figuring out what I would recommend without trying to map it myself. Maybe someone else has a better idea.