I've tried most nootropics on that big scatter plot and most pharmaceuticals have massive downsides. You're pulling one lever in a constellation of levers and we simply don't have the recipe or even understand what the chemical mechanism of action could be for instant, expanded, easy consciousness.
Adderall and meth are unironically the closest you'll get in a pill form for productivity but obviously have enormous downsides. You may want to try NMN long term. This has had some very impressive results and it's mechanism of action could plausibly favourably affect many biological factors.
It sounds cringe but structured, thoughful psychedelic experiences, meditation, having good people around you/stable personal life/good support and eating an organic, healthy diet with proper supplementation and exercise, in descending order, are the closest thing we have.
Almost all consistent top performers have all of those things (save perhaps psychedelics).
You can of course get amazing short term results with amphetamines, alpha GPC, fucking with your cholinergic system, EPO, whatever but they come at a large and often long term cost.