Are Steam account names private?

Question

From what I gathered, there are four kinds of identifiers on Steam:

• Account name
• Account email
• Profile name
• Steam Community name

I have my real name in my account name and email, and I would like to keep it private. My profile name is what I would like others to see.

My question is do others (including your friends on Steam) see your account name or email?

Answer 1

To answer your question Steam account names are private. Your email is private too as it is needed should you ever donate.
Below you can see the highest Steam Level player's information according to SteamDB.

This is the most information you can get about someone's account without having to ask said person.

Answer 2

Steam account names are private, unless you capture it on camera or something like that. Or your profile name is the same as your steam account name, it remains private.