Can anyone list which races of fae kidnap children.. And do they kidnap only very small children or even tweens and teens as well..

The myth of fae kidnapping kids is not real, however, for mythology sake all fae do it to replace the child with their own and the child is known as a changeling. However, if you threaten to punish the child (not physical abuse) the fae will bring back your child and take their child back.

There is probably a LOT of variation within the phenomenon of humans abducted by the Fair Folk for who takes people, which people they take and why. It may not be possible to identify a list of which Good Neighbors have taken part in this practice.

The indications are, however, that a person could be taken without reference to their age. It just depends on the individuals involved and the motivations of the Good Neighbor in question.

You might find these interesting (although they do not answer your questions directly—they just provide some starting points here and there):
-http://lairbhan.blogspot.com/2016/12/fa ... p.html?m=1
-http://lairbhan.blogspot.com/2017/03/the-slua-si.html
-https://www.patheos.com/blogs/agora/201
-https://www.patheos.com/blogs/agora/201 ... s-a-fairy/
-http://robscholtemuseum.nl/wp-content/u ... airies.pdf