Federation referees that get paid to officiate but don't stay current with changes to the Laws of the Game.
Happy to be paid, love being officious (it's always these ones), but won't ever look at the Laws to see what updates there have been over the last few years.
As a ref myself, I stay current and even have the IFAB app on my phone for quick reference if needed.
I'm also happy to be proven wrong, as that is a learning experience.
These same refs are often the ones that make it about them and not the players...stop start games that don't flow and bleed all the enjoyment out of it.