It would be really cool if i could find one that was rechargeable with USB C charging port?
This thread “Sofirn SP10S ”BLF edition” with Anduril”:https://budgetlightforum.com/t/-/56521” may be of interest to you.
I saw that thread was thinking if there was something that was already out there that had ramping i would give it a try.
without charging port but 14500 based and with stepless ramping:
lumintop blf gt micro
also without internal charging and unfortunlately it doesn’t seem to be available on the market for some time now:
blitzwolf bw-et1
the stepless ramping isn’t as smooth as known from anduril or narsil lights and it dims rather sluggish.
but the quality is pretty nice for the really low price and my nephew loves his 
furthermore it’s compatible with nimh and alkaline batteries.
no idea if it was finally discontinued by the manufacturer or how it will go on with it.
in any case i’m definitely looking forward to the pending sofirn sp10s blf special edition too!