You have a Dendrobium orchid, the new growth with the roots attached is called a keiki (baby plant). Probaby a hard-cane type of Dendrobium, see if you can find some complete culture notes on the net that relate to the climate where you live.

Those are whiteflies laying eggs under your leaves. Whiteflies is my worst enemy, you need to get rid of them quick. They carry a disease called tomato yellow leaf curl virus. Once the plant is infected it may take up to 2 weeks to show symptom and then the plant is permanently stunted, you will not get any reasonable production out of them, even so the fruits won't taste good. My neighborhood was infested with it and it can be hard to get rid until I make changes to whole garden. I had to pull all plants they like to host on, nightshade plants (tomato, pepper, potatoes). They like laying eggs under banana leaves as well. They like warmth, calmness, shade, and humidity. They generally come around during damp weather, so good sun exposure and windy deter them a bit. I tried growing companion plants and they aren't even afraid of them, landing next to the rosemary. I apply cold pressed neem oil (not the cheap neem bought from Home Depot which is not effective) and pepper mint soap under all the leaves of all plants that they like to host on. I pretty much check for all traces of them under leaves and use my garden hose to spray the underside of all the plants. On dry days I also apply diatomaceous earth to the bottom of leaves which makes it harder for them to nest on. It's a constant battle of cleaning up the shades in the garden and routinely spraying to kill the eggs and disrupt their breeding cycle so you can slowly reduce their population. Fortunately they do not like cold so during winter most of them seems to go away. I couldn't grow tomatoes for an entire summer because of them, I make sure to not make the same mistake next summer and concentrate on growing other crops they aren't attracted to.

If you see how Amazon warehouses work, it's no surprise when something TOTALLY random makes it into your box. They will put multiple, unrelated items in the same storage bin and the pickers who fulfill orders get instructions to grab item x from bin 100, item y from bin 350, etc. until the order is pulled. This is old and there are more robots involved these days, but it gives you the idea: https://www.youtube.com/watch?v=8-DgmfMa5Zk

1) I have these weeds in the first two pictures ALL OVER my lawn this year. I didn't do pre-emergent because I don't want the extra chemicals. But I spot sprayed all of them with Weed-b-gone and it's been a week or two and they are turning brown and dying. But when you touch them they pop a whole bunch of seed like things out(i mean A LOT). So weird. Are they actual seeds and are they dead? 2) What are the green weeds in the last two photos. The weed B Gone didn't do anything. These are in a lot of spots as well, but not as bad. 3) I understand that corn gluten meal works as a pre-emergent. Can anyone attest to how well it works and where a good place to find at a reasonable cost?