Sadly, I wouldn’t say GG are going strong….they’re technically together but in permanent hiatus status. I feel like only Taeyeon has a full time successful music career, the rest are just doing other stuff.
Besides them, I’m not sure if any other 2nd gen girl group are active like that.
No, but they haven't officially disbanded like other groups say Wonder Girls or SISTAR. They have still had that longevity having been around for 15 years.