Does anybody still believe in the ancient gods mentioned in various history courses?

I am wondering about Isis, Osiris, Ra, and Shu (Ancient Egypt); Baal and Mithra (competitors of the Biblical Jehovah and Islamic Allah); Zeus, Apollo, Athena, Aphrodite, et cetera (the Greek/Roman Pantheon); Thor, Wodin, and Loki (Norse myhology).

Are those once important gods now ignored?

BTW: What gods did the Druids worship?