I take a lot of vitamins and have found them helpful for me for a variety of reasons. Very generally speaking, Ive needed additional help with energy levels probably due to having more than one autoimmune illness
and have had cognitive concerns as one of my rx's has been known to damper down one's cognitive abilities.

The very last item on your list is something I take in a product called "ps 100." I have found it to be very helpful cognitively.

Other things like vitamins D3 and B12 and B6 seem to help me with energy.

Caffeine always helps me with both issues.