My migration to ClassicPress just a couple days old I took notice of some of the areas to customize my experience. I had an old plugin to add OpenGraph support to WordPress sitting in bitbucket that proved a good starting point.
As for the current theme I’m using ClassicSixteen, a well built clone of Twenty Sixteen, and have made notes of small adjustments to keep elements like headlines and elements consistent between templates. A simple solution will be to create a Child Theme to standardize between the two. A permanent solution would be to create my own lightweight theme using CSS Grid. Just one problem, my web developer skills have become a little dusty. 😛
Plugin in progress, no warranty or support provided: jd-opengraph.zip