Lisdexafetamine is somewhat unique because the slow release mechanism is more or less inherent to the actual drug itself. That is, the fact that lisdexamfetamine is a prodrug that needs to be processed into dextroamphetamine (the actual stimulant) is the slow release mechanism itself.

Methylphenidate is different because the chemical itself is the stimulant, so pharmaceutical companies need to come up with ways to physically release it slowly, e.g. via mini capsules that dissolve slowly.

Unfortunately every brand and formulation kind of does their own thing in order to differentiate themselves from generics.

IIRC Concerta was the most "advanced" in the sense that they formulated a special double release system where each dose also dissolved slowly. Ritalin LA is much jankier because it basically just released a second or third dose all once later on.

You can search "name of drug" + pharmacokinetics to get more graphs, which in combination with keeping a mood diary can help in nailing down hat works for you.

Yeah that's the thing it's all about the time release. Correct me if I'm wrong but vyvance big thing is that it.... fuck I forgot it the most of it but it slowly release through the liver because of a extra molecule on the drug. This makes it that your body only sucks it up as needed. When blood levels drop. So allegedly its damn hard to overdose on vyvance. The larger doses are only for how long of a day last for. 40mg 8hrs 60mg 10hrs etc.