[Kiwami]

"Detail of Heroes" might be your best option when it comes to cosplay reference material. Only Mighty Brothers has been featured so far, the other two you're looking for are too new so it might take a short while until they will be covered. At least I couldn't find any scans showcasing them. So your best bet is taking screenshots from the show.

Anyways, you can find the Mighty Brothers stuff here:

https://twitter.com/tokutokuscans/st...48527876489217
https://twitter.com/tokutokuscans/st...48719350665216