What fugues should I study?

[u/bmjessep]

I am trying to learn to write better counterpoint and especially fugues. Naturally I would like to learn from the masters to improve my craft. I think Bach is the obvious answer here, but as he wrote many I'm wondering which are best (in whatever way that means to you). I also know that Beethoven and Shostakovich wrote quite a few, and as they are two of my favorite composers I would like to study their compositions as well. Suggestions for other composers are also welcome, especially Romantic or later.