Exactly, there are a lot of BSD variants out there. You might consider them BSD distributions even. And they are as different from each other as Linux distribut

Exactly, there are a lot of BSD variants out there. You might consider them BSD distributions even. And they are as different from each other as Linux distributions are from each other. They all share the same messy ancestry of different companies cloning Unix in the nineteen seventies and eighties and doing loosely the same things with loosely the same naming conventions and tool names.