The Clone Wars is also EU because it isn’t in the movies. Everything that’s not in the movies is EU.
That used to be what they referred to as EU, but that term is not used anymore. It’s either canon or it isn’t. If it isn’t, it’s legend.
The term can still be used. Independently of being canon or legends, everything that’s not in the movies is EU. And a lot of people here couldn’t care less about EU.