Graham’s offer sheet was mostly to play a position other than QB. Regardless, he looks the most like a player who could have success in this offense to me. I personally would give him the keys and start evaluating/developing for next season.
LJ doesn’t have it and Tobias is just too limited. He’s more of a change of pace option than starter.
Next season the starting QB needs to be someone who is not on campus now. The optimum solution would be a transfer with the freshman QB gaining experience. Oliver needs to be at WR (optimizing his NFL prospects).