Lack of empathy; dishonesty; self-centeredness; chewing with mouth open (past partners)

chewing with mouth open
whistling
thrashing around or jiggling knees or tapping toes on the floor
tapping the table with a pencil
giggling, out of control laughing (mostly my kids do this)

What does picking at feet mean ?

I like all the things on your list, and I would add Dishonesty to the top of it.

Self-centered; lack of empathy; spoiled by their parents; lacks independence (not just too dependent on me, but anyone)

Hygiene is very important. I went to a guys house once and I went to the bathroom and noticed there was no hand soap/bar of soap, nothing to wash hands with. I asked him where the soap was. He told me he could let me use his soap that he showers with and says he usually doesn’t wash his hands! I was really disgusted. I’m a nurse and I know how filthy hands get. We didn’t go out anymore after that.
Also, I can’t be with someone who is racist or sexist. That is a total turn off.
Just a couple of deal breakers.

Bigotry. Pride without Humility. Excessive insecurity. Self-absorbed. Lack of compassion. Apathy. Poor listening skills. Lazyness. Materialistic.

Being an avid Trump supporter would be a serious strain on the relationship

At this point, Christian, Conservative, or New Age... Those things just drive me nutso.

Besides my usual red flags of tobacco use and having/wanting children, another big no for me is ignoring me/the house in favour of video games. My ex-gf ignored me. My housemates ignore upkeep. Gaming itself isn't a deal breaker but I don't think I'd live with or date another gamer unless they were a really conscientious person.