According to the SP Connect homepage: For diameter: Standard ISO 1" (25.4mm), Oversized MTB and Dropbar 1 1/4" (31.8mm) and 1 3/8" (35mm)

The bracket is not designed directly for 22 mm handlebars. It fits handlebars with a diameter of 25.4 mm (1 inch), 31.8 mm (1 1/4 inch) and 35 mm (1 3/8 inch). For a 22mm handlebar there might not be direct compatibility, but it might work with special adapters or adaptations.

No, there is no damper included

SPC+ head was included in the delivery. Status May 25

Yes, an SPC/SPC+ adapter was included in the delivery I received. So I can use my new shell on my old stand

Yes

It has 2 additional underlay rings, so the handlebar can be thicker or thinner.