Gateron Baby Kangaroo are a tactile, MX Blue are a (tactile) clicky.
I have samples of the former. The Baby Kangaroo aren't too far off from AKKO Jelly Purple or V3 Cream Blue, if you're familiar with those. The Baby Kangaroo are a little heavier than those, and a little heavier than TTC Bluish White.
They're basically a medium-tactile. Very crisp, so they are almost a clicky.
They're about 75% the strength of a Holy Boba / Panda, subjectively. And loud.
Is there any reason you're choosing between these two? Neither of them are particularly soft on the fingers. Personally, I would recommend getting a Kailh switch tester, if you want to try some nice clickies. Somewhere in the range of Kailh BOX White, Pink, or Jade would be desirable.