None in particular. Your only requirement AFAIK is that your dream keyboard be split, and use the ISO layout. I don't know what the ISO layout is, but I can't imagine any of those keyboards couldn't accommodate it with(out) some tinkering.

Thanks, I thought you had spotted a certain model. Yes, split and ISO are a mandatory requirement, but I like the rgb lighting in that keyboard. Unfortunately, ANSI and ISO are physical different key arrangements, even if thy differ only by a few keys: https://commons.wikimedia.org/wiki/File:Physical_keyboard_la...