Fairly easy to understand, but looks weird in places as others have mentioned (the X especially). Interslavic looks like a real slavic language, and is easy to

Fairly easy to understand, but looks weird in places as others have mentioned (the X especially). Interslavic looks like a real slavic language, and is easy to understand as well (though I would say a bit harder). I speak Slovak and Czech, and both of the above seem easier to me than Polish or Slovenian for example. Which brings me to, is there some sort of visualization of proximity of different Slavic languages? How much they differ between each other, which ones for closer groups, etc...