I'm the same as LJC, don't make things more complicated than they need to be. A standard knotless knotted rig probably catches most of the carp each week, and works for bottom baits and pop-ups.
They look like pop-up rigs, with movement, but as Vik says, the pop-up may have too much separation from the hook. For pop-ups, I prefer the bait tight to the hook, although a long hair can cause confusion as per Bill Cottam and Brian Garner when The Mangrove was first opened up.
My go-to pop-up (and snowman) is often a D-rig, (and often on a longer shank hook), a bit of movement, it resets and hookholds are usually nailed properly.
Me personally, I tie pop-ups on, although I recently had a revelation with that as I have been meshing baits. Mesh the bait, a twist of braid (dental floss) and knot it, leave the tag ends, then cut the mesh and lighter tag it. Using the braid tie the pop-up to a rig ring on the D-rig.
The bait screws are brilliant, don't get me wrong, but crayfish can remove the bait without your knowledge, or any indication.
Last year on Nazeing they were so bad, even meshed pop-ups got munched! I ended up using wooden balls as 'permanent' pop-ups with a blooming great match anglers olivettes as the counterweight. In fact I ended up with tench over 12 and carp to 28lb doing that.