I've had many people ask me what I use for streaming so I made a little list of the stuff I like to use from the cameras to my stands.
My favorite setup (runs about $600-900 all in per camera):
Sony A6000 - Can also find these used on eBay for around $300-500. New they go for around $800
This is the best camera IMO for 1080p 60fps that takes real lenses and has great autofocus. After fighting with focus issues with logitech cams for year I can confidently say that it's worth spending the $ on a good, proper camera. This puts out a CLEAN HDMI signal with no overlays. Not many actual cameras can do this. You will also need a MicroHDMI to HDMI cable and I use a CamLink 4K for the capture card. You also will want to get an AC adapter battery spoof thingy so you can run the camera off wall power.
Get yourself a fill light. If you go with the A6000 then I use the style that mount in the hotshoe for my main camera and I also have ring lights on my secondary ones.
No matter what camera you are using, get a light. It makes a huge difference in the picture quality you get when shooting video with them.
Logitech BRIO - The best webcam I have used in terms of picture quality and 1080p 60fps output is the Logitech Brio. The weak point of it is the poor autofocus when trying to show things up close. If you just need a decent camera for a head shot then the BRIO is a solid option.
On my main rig I have an Oktava MK-319 fed into a Behringer XLR USB adapter. On my secondary rig I am using a Blue Yeti and I also have a Yeti Nano. If you are on a budget then go with the Yeti Nano. IMO the older Yeti sounds the same as the Nano so if you want something larger with a fuller sound then go XLR. If you go XLR get the 2 channel Behringer I linked below as then if you want a 2nd mic you can use the same interface for both.
You should get a pop filter for your mic. I use the ones that just slide over the mic. Here are a few I have used for the various mics:
No question here. The Rode PSA1. This is the BEST mic and camera arm out there. I own 4 of them and some are 6+ years old. For around $100 they cannot be beat. Don't waste time and money on the other ones on amazon or wherever, I tried the cheap shit and it doesn't compare at all.
To mount the camera to the arm I use these tripod adapters: Ball Head Tripod Adapter
Cable clips (3D Printable) for the PSA1
In addition to all those other AV parts I use I have come to LOVE the StreamDecks. There are "DIY" ones you can make but by the time you build them and struggle to get them working you're in for about the same cost as just buying a Stream Deck. They have a few sizes. If you have a lot of scenes and other things in OBS that you use then go with the XL version (I have this on my main setup). If you only have a few or are just starting out then get the normal size one.