This page lists the tags that the software may mark an edit with, and their meaning.
mw-replace
mw-new-redirect
mw-undo
mw-removed-redirect
mw-changed-redirect-target
mobile web edit
mobile edit
visualeditor-switched
mw-blank
mw-contentmodelchange
mw-rollback
abusefilter-condition-limit
swstaffedit
visualeditor
visualeditor-wikitext
visualeditor-needcheck
advanced mobile edit