I don’t often find ones I think are super interesting, because I like weird stuff and my enjoyment comes from the journey of level 10 to level 75. Which is usually when I jump to another idea.
One of the more interesting and honestly really fun builds for farming the campaign is This one. It’s a 2 hand build, and a very interesting and flexible one, made by @Contragor. Its focused on immortal minions, but you can really play around and make it how you want. I got a lot of great ideas from playing it! Highly recommend it!