Culture is a fourth one.

Currently working towards the end of a contract/earn-out at a company where people just toss stuff they don't want to deal with over the fence for others to handle with usually zero communication about why/what/how. Just suddenly get a new project with no context. Also, three different bosses in two years because they keep leaving.

Second worst company I've ever worked for.

The worst one involved multiple c-suite executives that would throw objects at employees when they didn't get the answer they wanted. Thankfully I wasn't under contract there and got out ASAP.