Ordering Is Crobi doll still active?

They posted on their twitter and IG on the 18th of this month so I'd wager they are still active
Not sure where to find pics of the bodies that aren't for sale separately, but you could try asking them on their Q&A board or messaging them on social media.

 

I’ve never bought dolls from them new but their wigs didn’t take very long last year to arrive either.

 

Crobidoll last year gutted their site of many products.

 

I only found this on Dolk Japan site:

DOLK（ドルク）｜Heena

As far as one can judge from the measurements, the main difference between the three bodies is the bust size. It looks like the Maiden body is the least mature one.
Oh, and the Temptation body has not the chest joint.