Domain variations in Google Search Console (with and without www), should I add the sitemap to all variations or just the canonical one?

Question

Google

Hello. When adding a site to the Google Webmaster Panel (Search Console), google recommends adding all domain options - with www and without, with https (if any) and without. There is only one site, of course. Question: is it worth specifying a sitemap (a sitemap is also, of course, one) in only one version of the domain, in the main, or in all? Thank you.

Answer 1

Sitemap only 1 time for the main one.

Answer 2

Yes, it is worth specifying one sitemap.xml variant in which the correct URLs are indicated (those for which you set priority and use as the main one). Do not forget that you need to set up 301 redirects for those versions of the site that are not the main ones.
Regarding GSC (according to the old WMT), recently they have the opportunity to make sets (sets) into which you can combine data from different options. I recommend using all 4 sets just in case (http : //non-www. http : //www. https : //non-www. https : //www.) This way you will get the most complete information (there have been cases when redirects fell off, plugins turned off, crashed, etc., and the data was collected completely).