What are safari experimental WebKit features?

I noticed there are a lot more than there used to be and I have between a dozen or 2 dozen turned on.

I have no idea what any of them are or if they’re necessary, etc?

One time I opened this setting and all were turned on that I didn’t do. I never mess with these and honestly, I’m not sure my phone hasn’t been compromised/spied on using some type of device management as if I were part of a business.

I don’t need an explanation on each (unless someone has a good link handy) but an idea on whether or not my stuff looks normal.

I also underlined the ones that said profile 0 & 2 because I was told the profile option that used to be on my phone was some sort of MDM thing.