Lists creation is very universal. You can group your friends and have all in one url available or you can use it for listing alliances on cexplorer.io.
Go to "Edit" section of list and you can see there "External URL". Simply add your url to json file there and we will once a day sync and update diffs.
Structure of json file is here: https://github.com/cardanians/cexplorer.io/blob/main/examples/list_testnet.json (its just simple json array with pool IDs)
- If you add freshly new pool, then is not visible until pool will have pledge active (+2 epochs after pool creation).