My site is https://xxxxxxxxx.com (a wordpress.com based site), but do I need to add:

https://non-www
https://www.
http://non-www
http://www.

...to WMT tools to ensure that Google treats them all as one site, i.e the https://non-www version?

Secondly, I have purchased several expired domains with good metrics and have also put them on wordpress sites, do I need to do the same for these to ensure the metrics pass from what were http://non-www sites to the https://non-www it now is?

I am worried that this is affecting rankings as when I put the different versions of my sites into ahrefs they seem to return different metrics?

Any help advice would be be great!

Thanks!