They are all pretty much the same. And no pistol round has “knockdown power”. If it did it would knock you backwards just as hard. Isaac Newton and all...
A 125JHP .357 Mag does seem to incapacitate faster than anything extant, but it doesn’t even knock anyone down. It’s a function of it’s velocity, bullet design and shocking power. But not everyone shoots it well.
My stopping load recipe?
357 Hornady XTP 158 gr bullet, with 8.6 gr Accurate no. 5
It’s why a .45 ACP is great for stopping a target - the slow slug packs a wallop and literally pushes back...