I'm not sure what these are.
My first thought was snails, but pest snail eggs are a lot smaller and ramshorns have orange jelly. I have sparkling gouramis, but they make bubble nests. I haven't gone out of my way to make the neons spawn. My panda cories aren't old enough to breed.
They aren't snail eggs. Your corys are too young and even if not, the eggs would be sticky so wouldn't just detach from the plant and float away individually. Your Gourami would tend their eggs in a bubble nest. That just leaves the neons and even though you didn't do anything special to get them to spawn maybe they decided to carry on anyway.