“Looking for an 18650 light with USB charging, ramping UI and can be used a power bank”
I’ve been reading reviews of some flashlights here, but I have yet to notice one that has a power bank function. A power bank would have to have a good sized capacity. And a flashlight with bright output is going to drain battery capacity. So it would probably not be ideal for the batteries to share capacity to the flashlight and the powerbank; unless it has multiple 18650s (in which case, it’s probably a powerbank with flashlight)
For the power bank portion, maybe get a separate small 18650 charger with powerbank function, eg. Lii-100 (inexpensive, although not the smallest). There are some smaller ones I’ve read here (check HKJ’s reviews) but likely more expensive than the Lii-100.
Now with the powerbank out of the picture, let’s focus on the USB charging and ramping UI. So far, the ones I’ve come across here would be:
Astrolux MH10 (seems to be a clone of Imalent DN11)
Imalent HR20
Imalent DM21
(the Boruit RJ-02 has already been mentioned)
(there are likely others, but so far those are the ones I’ve scanned reviews)
HR20 is actually a headlamp but can be used as a flashlight, and from the review I read, its ramping seems to be better than the DM21.
The Boruit RJ-02 is less bright (not Cree LED), and is also a headlamp that can be used as a flashlight, ramping is also said to be a bit hard to use.
(I only selected one or two review links below, but there are others)
MH10 review:
Imalent DM21 review:
Imalent HR20 review:
Boruit RJ-02 teardown:
~
Update:
I just saw something that seems to fulfill what you’re looking for (powerbank, flashlight, ramping):
Xiaomi portable flashlight w/ powerbank function (ramping too)
The LED used doesn’t seem to be mentioned though, so the light output is probably not what you’d normally expect from more well known (Cree) bright LEDs…