Sure thing! Hope this helps. A jelly polish is a very sheer polish that either is not meant to be opaque, or take many coats to be opaque. It can be a very clear color or a murky/milky finish if that makes sense. The polish I used in this case, Essie Marshmallow, is pretty close to opaque in 3 coats so if I wore it on its own, I could get it basically solid in three coats. So you could call that a milky jelly! But most traditional jellies are the other kind, the totally sheer kind that isnt meant to be solid and opaque. Here are some examples!
Claires Candy Shop «this one comes with glitter already in it, but you can see that the glitter is a little obscured by the pink. This is kinda like a jelly sandwich in a bottle!
I honestly dont have too many jelly polishes, I only own two of the ones I listed above, those were just ones I could think of off the top of my head. I’m sure if you google something like “jelly polishes” or “nail polish glitter jelly sandwich” you could get some results, but I gotta go to sleep! I hope this helps! And thank you for the kind words :D