A great start: Ranked Choice Vote Calculator

 I was surfing around for some examples of ranked voting, in the hopes of finding some nice code to inspect and work from, and found this project - https://www.rankedchoices.com/home

It's very robust, and already does at least as much as I know how to do, and then some! Kudos to the creator, David Moritz!

Here's a silly example ballot I made, if you want to try it out for yourself.

https://www.rankedchoices.com/hbbq