Pob and most of the cookie-cutter front-ends do have their canonicals set properly.
The issue with Google ranking other versions is just that the inleo.io domain is very weak.
Over time and if you continue to implement a few tech changes, the domain will improve.
As authors, all we can do is keep internally linking to the inleo.io versions of our posts in future pieces.
This will continue to tell Google that they should change to index that version but ultimately we're at their mercy.
You're right, everything is very early. Little by little this positioning will be achieved.