Using the Google Search Console "Removed Outdated Content": https://www.google.com/webmasters/tools/removals
I requested the removal or re-indexing of my profile pages on two 3rd-party sites, that I had just removed my actual name from, that were both denied (the request's goal was such that they wouldn't return in search results for me or contain my removed name in snippets or url).
When searching for my name: "John Doe" on google.com, for site1 (made request twice, second was more explanatory but still denied):
site1 (unchanged public profile address): site1.com/people/username1 site1 (former page title): John Doe on Site 1 site1 (current page title): J D on Site 1 site1 (words in page removed): "John Doe" (now appears as "J D" on site)
For site2, the words "John Doe" do not appear in the page, rather in the url (request also denied):
site2 (former address): site2.com/profiles/john-doe.html site2 (current address): site2.com/profiles/user-name-other.html site2 (page title unchanged): User Name Other's page
However, for this second site, entering any non-existent username forwards to a general directory rather than a 404 or other sort of error, for example, going to:
site2.com/profiles/non-existent-username-url.html (or) site2.com/profiles/john-doe.html
As of my last attempt, both of these removal/reindex requests were denied, such that searching for my name (ex: "John Doe") will still return both of these in the search results, seemingly un-reindexed:
site 1 still contains John Doe in its title in the snippet even though, it has now been changed to initials J D in the title, and
The site 2 snippet still contains my name as part of the url ("john-doe.html"), even though that also has been changed, and as for any non existent username forwards to the directory (rather than my profile) as mentioned (so from google's perspective, the page still "exists" and does not return an error).