Before getting on stimulants, I too have taken Wellbutrin/Bupropion and found it somewhat helpful. SSRIs made it worse for me.

I am quite surprised to be honest that you are taking Wellbutrin and Vyvanse at the same time. While not dangerous in terms of possible serotonin syndrome, this combination is a little bit concerning as Wellbutrin can raise the blood levels of amphetamines and lower seizure threshold.