The blue mod closest to the SBS is an Eleaf Pico Baby sporting a 16mm Dvarw, then the one on the extreme right is a Stratum Zero Mini clone with a blue 22mm KF Lite.

I have a 2k16 Doggystyle on the B'adapt. A KF Lite is about the same fit, in fact I've had a 22mm on there with the cage, then a 24mm without it. I really like SBS mods that can use shorter tanks.

On a side note, that Doggy puts out amazing flavor with Steam Tribe Peanut Butter nic salt. It's so good I'm running out of it already.