What is synced in the iCloud Keychain?
In "Keychain Access" on my Mac, I find I lot of passwords I know nothing about. These include Application Passwords, Network Passwords, certificates, private keys, etc.
When I turn on the iCloud Keychain, will ALL of this be synced? If not, exactly which will be synced (I know autofill usernames and passwords, forms, credit cards, etc., will)? If it is all synced, what specific purpose do they have?
MacBook Pro 13″, macOS 11.0