The appeal of this deck is that you can go from a level 4 to a level 6 in one swing while dropping multiple bodies.
The Rapidmon is mostly here to drop off the Cherubi ACE during the opponent's turn. The Cherubi ACE will at least do 4k DP- and the Rapid will do another 4k during blocker timing, killing anything that's 15K or lower. (They're also your best bet against getting rid of floodgates.) The Lucemons are similar, though they can be dropped by the EX6 Antylamons too. And Cherubimon X can replay both from hand or trash.
The new Shu-Chong lets me evolve up fast and cheap. I'd put in a Mimi too but I don't really have the room, and nice as she is you don't really need her.
The new Antylamon basically lets the deck work. It's the preferred level 5 if you can find it. The other Antylamon is basically a placeholder for the upcoming BT17 one. It's two colors and named Antylamon. It's fine. It's... it's fine.
I like the purple Cherubimon because he allows you to keep a board against deletion. And he's an ACE target which can surprise some people.
The non Rapid level 4s have the right names and have Alliance. You can cut one or two to run the starter deck Wendi, especially if you're scared of Pillowmon and Pomumon, but you'd have to run Agility Trainings instead of Double Typhoon and hope you have the EX6 Antylamon in hand when you're ready to swing.
Going full lop at the bottom felt a little greedy. Running the Alliance inheritable at 10 feels just right. The starter lop can stack Alliance and let you evolve up a chain without a Shu-Chong.
I'm running the DP Kokomon because I have enough draw and need more DP, but YMMV.
Heaven's Judgement is for wide boards, the Giant Missile is for when you just gotta get a man off that board, and both are good security bombs. Double Typhoon over Agility Trainings because we're not running the starter deck Cherubimon and we want more bodies on the board for when we go into Cherubimon ACE. You need at least three other mons out to kill a Magnamon X without a DP inheritable buff. Plus Double Typhoon is way better in security, it can grab your Shu-Chong and a digimon, and it digs one deeper.