I really do not understand the question? I mean if you are looking for " companion plants" to grow near your orchids, you could try whatever you want.
If you are looking to grow a " companion plant" in the same pot as an orchid, that is not a good idea. So many carnivorous plants are freshwater bog plants that like their feet wet all of the time. Orchids do not tolerate wet feet.
So a little clarity on your part is needed please.
