>>16086060millie had a huge past following
nina is very good at gaming the YT algorithm and has been doing a ton of shit on social media and admitted clip baiting to pump her channel growth
enna & reimu are both former utaites without as much streaming experience.
obsydia went through the same shit, rosemi lagged pretty far behind and petra's growth was msotly frontloaded by her design and rumors about her identity before she debuted. luxiem is just doing exceptionally well because of curiosity about major corporate-backed males.