I've found rhodiola rosea to help a lot with brain fog if you suffer with that. It doesn't do much for my fatigue but it's nice for days when I'm having a lot of cognitive problems from being tired and am feeling dissociative from the brain fog. This is the only medication I've had much success with thus far. If you live in the US this is the one that I've been using. I've found that I usually need 2 doses about 6 hours apart to make it through the day.
Otherwise, you can check out r/Nootropics for people discussing medications to help with cognition and wakefulness. You can also check out the phoenix rising forums for people discussing ways to cope with cfs. While it's not the same as narcolepsy, I've found it to be a useful place to find people experimenting with different options to help combat chronic fatigue.
Obviously you should take everything you read online with a grain of salt. the placebo effects is a very real thing so some people may claim benefits from some things that you may not experience. Everyone metabolizes substances differently too so just because you see a lot of people talking about success with one substance doesn't mean you will as well. Messing with this sort of stuff is sadly very hit or miss and you kinda have to be your own guinea pig since there's not a whole lot of research on most of these things and what is there isn't conclusive.
I hope some of these resources help!
I've not tried it much since my sleep study only recently was conducted but I didn't noticed much from it. I may just need to increase the dose or something but I'm not sure. If you don't have a history of bad allergies it could be something to look into regardless.
The only medication I've taken that I've experienced noticeable positive effects from is rhodiola rosea. It helps me with brain fog sometimes but that's about it. This is the product I use https://smile.amazon.com/dp/B0751HBW2F/ref=cm_sw_r_cp_apa_glt_fabc_AP39WK8FSBM5JCM6KDQV?_encoding=UTF8&psc=1