I have a huge IG army made of catachan models because i think they look hilarious.
In 3th ed there was a Supplement for catachan jungle fighters you could use to play them but now there is nothing like that, not even a Formation or detachment I know of.

I want to use them as catachans but can't come up with a good idea how to field them to represent this.
Sure I could just field huge blobs of infantry or something like that but I am looking for a possibility to make them a bit better because plain infantry doesn't cut it for me.

Fielding them as veterans with that stealth doctrine could work but in the Standard CAD you can only field 6 troops so that would be 60 men (not enough).
The Militarum tempestus seems not bad because it makes them shock troops and they can deep strike which looks like they hid and ambushed the enemy but the 4+ armor is a bit much even with those huge muscles ^^
And it would be a bit boring to field only that one unit over and over and over again.

So what I am asking is, does anyone have a good idea how to represent them on the table? I don't care if it is a Formation or something like that. Everything would be ok.