I see your 8 or 9 quest follower screenshots - now observe. All 16 Knights of the Nine as active followers - see comments for PC console commands. : r/ oblivion
Amazon.com: The Elder Scrolls IV: Oblivion - Playstation 3 Game of the Year Edition : Bethesda Softworks Inc: Everything Else
The Elder Scrolls IV: Oblivion Arrow Cheat Codes
The Elder Scrolls IV: Oblivion Cheats for PS3
Oblivion - Clone companion on console (PS3) - YouTube