photobucket links do not work, otherwise the photo is too small to be sure but it looks like a phalaenopsis orchid, real or fake.

You have posted on the Photo Gallery. Orchid growing is discussed over on discussions. Your orchid shows symptoms of being unhappy with your growing conditions. Temperatures? Light? Where are you in the USA? and is potted in Sphagnum Moss which is dangerous if the orchid is grown too cold. Go over to discussions and read all the numerous posts about Phalaenopsis. Culture notes in the link are prepared by the American Orchid Society. AOS Culture Notes

Coco coir can work quite well for succulent seedlings. They are most likely G. California Sunset or G. Bronze. And they are clustering because you have given them proper conditions to reproduce as well as started with healthy leaves to propagate from. One well-off succulent leaf can produce multiple pups if given the appropriate amount of light as well as watered when roots appear. If you start caring for the pups like normal plants as soon as roots appear, the mother leaf will sometimes remain for months and continue to grow new pups. It's a fun way to add some unique multi-headed specimens to your collection. Most succulents naturally pup or offset, but when grown from a single leaf, it gives a lot of visual interest early on because many of the rosettes are of similar size/age. I quite enjoy the clustered look. You can move them around as much as you want. If you combine all of them into the same pot and want to use coco coir (which there is no problem with, you just have to water appropriately, as you said), I would honestly leave them in a smaller pot. I personally enjoy watering and in a smaller pot the water would be used/evaporate more quickly than if you chose a larger pot. Plus with less space for the roots to colonize, you would most likely see more top growth*. *this is a short-term benefit. As the roots get congested you will see a dropoff in the overall health of any plant. However, since you appear to be in Illinois, this would be something you could do for 3-4 months and watch their growth explode. I do not think this is enough time to see a detriment to the overall vitality/health of any of the plants. Then separate and repot individually in larger pots in May. This is roundabouts the ideal time for repotting most things anyway.

I have seen the term grids used by window companies themselves - just because there is a technical name for them it doesn't mean there aren't other laymans terms that aren't valid to use as well. Case in point, Pella Windows themselves refer to them as grids in this article. https://www.pellabranch.com/windows-doors/windows/window-grid-styles/