I also hadn't heard of them before either, but the sounds are nice. Orchid seems to have a lot of Mellotron, OP-Xa, Mini, Modular and a few Jup-8 and Jun-6 presets.
I also downloaded their free Analog Lab banks (6 in total, look under "Free Downloads" - https://audiojuice.co/collections/free-downloads) and they are also good, they mostly use Pigments from what I saw, also quite a few Mellotron, but many of the others as well.