DIA has Chaeyeon from IOI
youtu.be/fEYF3T0kQEo
youtu.be/p4r_9U-ULEg
youtu.be/pmMjkMtpnTc
This thread has been done so many times but here we go:
First, X1 aren't really relevant to this. They barely debuted before they disbanded.
Kep1er's situation is also vastly different. GP999 had a lot less support and hype compared to Produce due to the scandal and rebranding. Kep1er didn't have a fandom as big as Izone's to begin with and they're also managed by a different agency. Wakeone is managing Kep1er and they're doing an awful job at it. The promotion is directionless, dated and painfully low budget.
So that leaves IOI, Wanna One and Izone.
IOI was the first Produce group and was treated like a test subject. Their contract only lasted nine months and compared to W1 and Izone their promotion was kinda messy. The members agencies were also going in blind when re-debuting them and made lots of mistakes that later seasons could avoid. For example, almost all IOI members re-debuted in groups with 8+ members while both W1 and Izone members all debuted in smaller groups or as soloists. Lets be honest, if Jellyfish had the same information they would never have debuted Sejeong in Gugudan.
Wanna One is trickier since they were arguably the most successful Produce group. Their contract was also a lot shorter than Izone's, a whole year shorter, so that still played a part in it. Being a boy group made it harder for the members to stay relevant with the GP after disbandment too. No 4th gen boy group can chart, not even big 4, so small and mid-tier agencies managing it, even with a W1 member, is obviously no easy task. Cube's nbg had the most hype with multiple well known members but for some reason their debut fell through and the members all left. Kang Daniel got into a court dispute with his old agency right after W1's disbandment and couldn't promote for months, killing a lot of his momentum. Afterwards he started his own agency and is now managing himself. He's doing okay, good sales for a soloist, but there's clearly a difference between what his own, new agency can achieve compared to a big, established one.
Plus people are kinda overhyping ex-Izone's members success. The only ones who are really doing well are Ive, LSFM and Yena. Eunbi, Yuri and Chaeyeon all underperformed as soloists. Not sure what Hyewon and Minju are even doing. Nako and Hitomi are doing okay in Japan I think but don't really know enough about the Jpop scene.
LSFM are from Hybe, they would have done well either way. I'm happy Chaewon and Sakura debuted in the group but them being there is not the main reason for the group's success. Just like Itzy had a successful debut even after Somi left JYP. Or Newjeans instant success.
Yena's debut did great but Smartphone wasn't as popular and neither of her two songs are close to as successful as Chungha's Rollercoaster (her first comeback). Admittedly Yena's sales are a lot better than Chungha's but very few solo artists, especially female soloists, continue to have strong sales without charting to back it up. (tho I hope Yena stays popular. Love her as a soloist)
That leaves Ive. Ive is the only one who's popularity is exceptional or surprising. Yena isn't doing anything we haven't seen before and LSFM are a Big 4 group. So yeah, Ive is the mystery I suppose.