Still waiting for Delta + Difftastic integration:

https://github.com/dandavison/delta/issues/535

Came to say this as well. Started with delta, then found difftastic.

Even better is using it via jjui, a fantastic TUI for jj vcs

Came here to say this, difftastic is great as long as you are working in a language where it understands the language tree (most languages). Getting away from diffs being focused on line changes to diffs that understand the actual language makes so much sense once you start to use it.