Toptul sells 12-point versions but not your desired 6-point. The model names start with AEAC (mirror finish) or AEEC (satin finish) in case you’re interested anyway. They’re cheaper than most alternatives I found.
Bahco has the 4040M, available in larger sizes than the Toptul models (up to 27 mm) but still only 12-point.
Facom has the 66A as mentioned. They’re also 12-point.
Part of the point of these swivel-head spanners is access in tricky locations, and 6-point would restrict that. The design is not ideal for high torque, so I suppose 6-point sockets wouldn’t offer much value.
Other options: Gedore 34 (double ended), Gedore 534 (single ended with open-ended spanner on the other side), Hazet 645, Stahlwille 29 (which is 6-point in the smallest 6x7 mm size only).
This spanner design is common in certain countries, especially in northern Europe. Much less common in others. Not sure why the regional variation exists.
Depending on your purposes, you might be interested in the Facom 99C instead, though it’s completely different. Look it up to see. It’s 6-point.