That just looks like a new ordinary mapper in Las Vegas (iD 2.8.0, with changeset tags that match other iD 2.8.0 edits)

The edits of the others in the list that I’ve looked at seem OK (road additions rather than problematical access changes)

That looks like the old (“iD 2.4.1”) portal, but their one edit looks perfectly OK.

EDIT: I’ve removed the statement ‘The others in the list do look like they are part of the same “team” - their portal is now saying it’s “iD 2.8.0”, but the changeset tags differ from normal iD 2.8.0.’ above because these changeset tags (including a blank “source”) are actually standard iD now - my mistake.