The longest protected 18650s I have on hand (Keeppower P1835U at just over 70mm) work in my Wurkkos FC11, BLF LT1, and ThruNite TC12 V2. The FC11 is high quality for its price. The LT1 draws low current with 4 batteries installed so might be a good choice for batteries with overly-sensitive protection circuits. The TC12 is certainly larger and probably more expensive than it needs to be, but I do like it.
They will also work in “dual fuel” type Streamlight flashlights like the 2L-X or HL-X. Their own 18650 is protected and on the long side.