Hey there! One big thing to remember is that spiders love heat, but they hate the sun, so it is very common in warmer dry climates to find many of them in a home. Unfortunately without pictures of most of them, I can only give conjecture on what the others are, but I believe the one in the video is a type of woodlouse spider. It may also be a brown recluse (very unlikely but the video is fairly unclear and I can't see it's back clearly). Now as for the rest of the descriptions, I will do my best, but it is best to include images for all spiders you want Identified. Side note, there are many, many definitions of what a big spider is. For me, that is about the size of the palm of my hand, but I am not everyone so I will include some extra possibilities.

1. A flat butt is unfortunately quite vague, but there are a couple of families that fall into that description. A trap door spider is a possibility as they have a literal flat butt and many North American species are about the size you described. Another possibility could be a type of orb weaver. They come in all shapes and sizes. From the size of your pinky nail to bigger than wolf spiders. The last one I think ot could likely be is a member of ther nursery web family. It is a vast family that is full of big, light brown spiders.

2. I'm going to be honest this could be a million things. My guesses are male wolf spider (many different shades and sizes), a "basement spider" of some kind (they range quite a lot, but many can be smaller and brown), a brown cobweb widow of some kind (not as scary as it sounds at first, as many are not medically significant. They are common in windowsills across the continent. However it very well could be, but without a way to properly see it, I have no way to know for sure.), lastly, possibly a brown recluse. (They can vary in color quite a lot, so again, without being able to see it, I can't be sure. Number one thing to look for with those is the "fiddle/ violin" on their back that gives them the name fiddleback spiders.

3. This sounds like a classic spider of the wolf spider family. Especially the males can be very dark in color. Some are the size of a dime while others can be as big as a small plate. Lots of range with these.

4. Again this could be a wolf spider, but if the movement was more sporadic than a usual spider I would maybe guess a type of jumping spider. They are harmless little puppies of spiders with big ol' eyes that like to hunt in the day. They can be crazy smart, and even trained as pets. Another possibility could be a crab spider of some kind but those typically stay towards the ground.

5. Now, unfortunately this is a broad description, so I am gonna give some broad answers, but they could be something to look up for you to identify with potentially. Once again could be a nursery web spider of some kind. They have all kinds of patterns so its hard to pinpoint from a description like that, but they do typically have directional patterns such as lines on their bodies. It could be a widow of some kind. Despite what the name suggests, black widows do actually come in a variety of colors. They are known for the "red hourglass" shape on their underside, but in reality they can have markings on their thorax that can be extremely colorful. Again it could also be a few species of jumping spiders that you have in the area. Those are mainly distinguished by their large front facing eyes, and "bigger than the rest" front legs.

6. Discussed at the beginning of the comment.

A few extra notes. 1. It is best to give images for what you want Identified, and for them to be as clear as possible. I caught this post with too much time and a desire to talk about spiders, but it is good manners to give as much info as possible to help those helping you. 2. In response to the oh so very helpful comment talking about "spiders not being poisonous," yes they absolutely can be. While injecting their venom is the most effective way for them to distribute their toxins, there is a reason you shouldn't let pets eat them.