KC Atago selfie set. Neither this nor the previous one have a studio set accompanying them in her store. This should bring us up to date on released sets barring the couple lost-ish ones from the list in OP.
She keeps posting new studio pictures but I've no idea what the timeline for release is. Machine translate usually just ends up with nonsensical stuff like "I want you to increase", which you can definitely make innuendo but it's quite a stretch.
Set covers finally showing up. Looks like six so far which is usually about right for a seasonal batch, though maybe there's a bonus set for buying the all-in-one pack.