Are there any other prop firms besides T3 Trading Group that will sponsor someone to get there series 57 license, employ them and allow them to trade from home?
employ ? you mean on a salary + performance ? that would be true top tier firms who hunt talent on campuses and from veteran traders, and mostly you will need the type of education they are looking for like maths. engg, IT etc I doubt Bright "employs" you.
So T3 Trading Group is the only prop firm that will back traders with little to no experience? There is no other prop firm like T3 Trading Group?
If you have little/no experience, you would be looking for education, not backing. Remote education is not as effective. So either you try to join a firm where you can learn seating next to live traders, or you learn to trade first and then look for prop firm to back you. Kirshner Trading Group has a good reputation.