Who own the servers? There are a lot of servers. Is all these from Electrum?
The community. Anyone who is running a full Bitcoin node with txindex set to 1 can run an Electrum server.
Difference between automatic connection and manual connection?
Manual connection mode lets you connect to a specific server which you trust. Some nodes might keep the logs and attempt to track their users. There are still many servers that are trying to take advantage of users who didn't upgrade to the latest version by tricking them into downloading a modified version of Electrum