I guess it is better to start asking: in which light(s) do you want to use the 14500 batteries?
Are they flashlights that need high drain cells?
Most of the high drain cells are not protected. Ex: Vapcell H10, Shockli H10, Efest IMR, Windyfire, …
Many unprotected cells are not high drain. Ex: the black Shockli above, Vapcell 14500 gold, Sanyo UR14500P, …
Most protected cells are above 51mm. Ex: the Nitecores, the Skilhunts, the Keeppower, the Xtar, the Wuben, and so on
Some protected cells (that even have mini usb port) are below 50mm. Ex: Lumintop (blue and white), and eventually the orange and white too
So, I would ask: for which lights you want the high drain? If it is a light like a Lumintop tool AA, you won’t need a Vapcell H10. But if you will use it in a light modified with a direct driver in which you want full power, you will need one of those, because otherwise the light won’t put max output.
You have unprotected cells below the 50mm such as the black Sofirn, but it will depend on the light you will use them in.
EDIT, I guess you have this information already.
EDIT 2: Rechargeabe 26650, 21700, 18650, 14500, 10180 Li-ion Battery Lumintop
Search for : Lumintop 14500 Rechargeable Li-ion Battery with Micro USB charging port