If you need the list of nodes for any given coin, you can visit the block explorers of the particular coin. Block explorers help us to get basic details on the node lists, transactions, balance in a particular address. You can use cryptoid for getting the list of nodes. For example Dash, a popular POS coin has nodes such as this. Here you can check for the node count, shares present with each node and the wallet balances etc. Here is an announcement in bitcointalk made for cryptoid.

Similarly, you can get the list of nodes by requesting the peers you have connected with by using the getaddr() function. If the peers help you out in listing more peers, you can request the peers of peers for more nodes for you to connect with. Here is a list of nodes for Dash to get added in addnode function.