I think the linked Meta SE question explains well. How do suggested edits work?
"Community" appears (as far as I know) in the following situations:
- One of the reviewers has chosen the option to "Improve" your suggested edit. In that case, depending on whether the reviewer has
chosen to deem your suggested edit helpful, the Community user will
approve or reject your edit. (Meta SE answer. There is another case in the link)
- When a spam or offensive question or answer posted by unregistered user is deleted by the system or votes as indicated in the linked answer, What is the best term in (global) copywriting: "sticky tape", "tape", "scotch tape" or "sellotape"?
This answer was marked as spam or offensive and is therefore not shown
- you can see the revision history for details.
locked by Community ♦ 9 hours ago
deleted by Community ♦ 9
- When a duplicate which is suggested by a close-voter is accepted by an OP. For example, "I would like to know what your name is" instead of "I would like to know what is your name" was close-voted as duplicate by only two users, but closed because the OP approved it. That's why it shows "marked as duplicate by FumbleFingers, Hot Licks, Community♦ 1 hour ago".
The "Community" (which approved the edit) means the edit suggestion was re-edited by another user. The user Community seems to represent an unregistered user or those who don't have the right to close-vote a question, etc. as indicated in the link:
I do things like
Randomly poke old unanswered questions every hour so they get some attention
Own community questions and answers so nobody gets unnecessary reputation from them
Own downvotes on spam/evil posts that get permanently deleted
Own suggested edits from anonymous users
Remove abandoned questions