Hi Jirel and welcome to the forum!!!
Visible roots, or aerial roots, are good
. What I worry about is the "plastic cups" that they are in. Are there holes in the bottom for good drainage? If not, then I recommend an immediate repot for all of them so that the roots do not rot.
There is plenty of information here on the forum and if you can't find what you need the members are more than happy to help you out.
We can't wait to see the pics of your newly acquired collection.