Have a look at this thread for a list: https://www.mpgh.net/forum/showthread.php?t=683570
If there are any you want to know more information about specifically, just point them out and I'll let you know.
If you have premium you can request one custom image title. Night owl is just a commonly used custom one. If you want to request one yourself just go here and read the sticky threads: https://www.mpgh.net/forum/forumdisplay.php?f=118