Comment by ilyagr

https://github.com/Wilfred/difftastic/wiki/Structural-Diffs is a nice list of alternatives.

Difftastic itself is great as well! The author wrote up nice posts about its design: https://www.wilfred.me.uk/blog/2022/09/06/difftastic-the-fan..., https://difftastic.wilfred.me.uk/diffing.html.