Hello Wulf,
can you help me?

would like to have the online players names displayed there.

{
"Message - Admin Color": "orange",
"Message - Footer": "====================",
"Message - Header": "==== Players List ====",
"Message - Max characters per line": 50,
"Message - Number yours available slots": " to 500",
"Message - Online players": "Players online: ",
"Message - Player Color": "green",
"Permission - Oxide Permissions": "canplayerslist"
}

maybe like this?

with kind regards

I'm not sure what you are asking really. Could you elaborate?