I know about Swift, O-C, C, C , and maybe even C# utilizing Unity for iOS, however, is it possible to write native iOS apps in even more languages? For instance, would there be a way to run Python or Ruby-based apps?
Yes. Lua, JavaScript, Ruby (<a href="http://www.rubymotion.com" rel="nofollow">http://www.rubymotion.com</a>), Java, C#, and pretty much any language that can talk to C (that's almost all of them) and embed and disable JIT (harder for some).<p>It doesn't mean it's easy to write an app though because you need to make a bridge to C and Obj-C. The languages above, people have already done so through varying techniques.
I believe Kivy ( <a href="http://kivy.org/docs/gettingstarted/intro.html" rel="nofollow">http://kivy.org/docs/gettingstarted/intro.html</a> ) is Python and can deploy to iOS (although it looks like a horrible faff - <a href="http://kivy.org/docs/guide/packaging-ios.html" rel="nofollow">http://kivy.org/docs/guide/packaging-ios.html</a> )
although a small user base, Monkey-x is quite fun (and compiles to native iOS!):<p><a href="http://www.monkey-x.com" rel="nofollow">http://www.monkey-x.com</a>