I think L-Tyrosine is one amino acid that should be added to this list. It can greatly improve the benefits of ADHD supplements because it converts to dopamine and ADHD drugs boost dopamine levels and then drop them down when you crash. L-Tyrosine also converts to epinephrine (Adrenaline) and norepinephrine. So, you can take it later in the day when you're coming down off the ADHD medication and replenish those neurotransmitters in your brain. N-Acetyl-Tyrosine is a more potent form of Tyrosine. https://amzn.to/3gEE77s

You can read more about the difference between L-Tyrosine and N-Acetyl-Tyrosine here: https://www.mindlabpro.com/blogs/nootropics/n-acetyl-l-tyrosine-vs-l-tyrosine 

Check out Will Brink's Bomb Proof Coffee recipe where he recommends a morning cup of joe mixed with 2g of l-tyrosine, dark dark chocolate powder, 5g of creatine, and coconut oil, all of which help with brain function. https://www.youtube.com/playlist?list=PL_SfHjbACIyZIjyDSCfUaDZ06ofn9D9Ie 
I recommend it with Starbucks 2X coffee blend - it has twice the caffeine of regular coffee and really works great with ADHD drugs.
https://amzn.to/3mCDrmU

If you want to learn more about how caffeine works, I'd recommend ASAPScience's great video titled "Your Brain on Coffee" https://www.youtube.com/watch?v=4YOwEqGykDM

It works great for slow releasing energy, no jitteriness, and lasts throughout the day to help cognition. He explains all the science behind it in the videos. Will Brink graduated from Harvard University: ALB with concentration in Natural Sciences. His full bio can be found on his website: https://brinkzone.com/about-will-brink/