For SDL Gamepads: How to map controller hubs like Mayflash DolphinBar?

[HomeStarRunnerTron]

Hi-hi! I was directed here from the SDL_GameControllerDB. I have a Mayflash DolphinBar which allows me to pair four Wii Controllers to the computer through its Controller Mode. When they pair, they're all part of the same GUID, and when I try to add them each to my Gamepad Database, the mappings can't all co-exist, so only one ends up being read.

03000000790000000318000000010000,DolphinBar Player 1 Classic Controller,a:b8,b:b12,back:b32,dpdown:h0.4,dpleft:h0.8,dpright:h0.2,dpup:h0.1,guide:b44,leftshoulder:b16,lefttrigger:b24,leftx:a0,lefty:a4,rightshoulder:b20,righttrigger:b28,rightx:a8,righty:a12,start:b36,x:b0,y:b4,platform:Mac OS X,

03000000790000000318000000010000,DolphinBar Player 2 Classic Controller,platform:Mac OS X,a:b9,b:b13,x:b1,y:b5,back:b33,guide:b45,start:b37,leftshoulder:b17,rightshoulder:b21,dpup:h1.1,dpdown:h1.4,dpleft:h1.8,dpright:h1.2,leftx:a1,lefty:a5,rightx:a9,righty:a13,lefttrigger:b25,righttrigger:b29,

03000000790000000318000000010000,DolphinBar Player 3 GameCube Controller,platform:Mac OS X,a:b10,b:b14,x:b2,y:b6,start:b38,leftshoulder:b18,rightshoulder:b22,dpup:h2.1,dpdown:h2.4,dpleft:h2.8,dpright:h2.2,leftx:a2,lefty:a6,rightx:a10,righty:a14,lefttrigger:b26,righttrigger:b30,

03000000790000000318000000010000,DolphinBar Player 4 GameCube Controller,platform:Mac OS X,a:b11,b:b15,x:b3,y:b7,start:b39,leftshoulder:b19,rightshoulder:b23,dpup:h3.1,dpdown:h3.4,dpleft:h3.8,dpright:h3.2,leftx:a3,lefty:a7,rightx:a11,righty:a15,lefttrigger:b27,righttrigger:b31,

I notice I can still use this single GUID to map all four of my controllers in Dolphin, but beyond that, no other SDL2 program seems to read the four controllers. Is there anything that can be done to allow multiple mappings? All the best!