Based on the CN order, we're definitely going to get Nikketa after Qiuhua because we just got Springfield so it would be the perfect time to release her and CN's story starts to fall in line with ours around the Kluk banner (for the most part). Belka and Andoris' stories are probably not super strict on the timeline of when they occur like Yoohee's story so they're likely do all of 404 in a row. My banner prediction is:
Qiuhua > Nikketa > Belka > Andoris > Leva/Lenna (They'll probably do a double banner since Lenna is kind of a weak doll and thematically it makes sense) > Lainie