Assuming non-modded stuff, the below observation comes from owning several of these lights at one time or another, in combination with Selfbuilt's data from his amazing AA roundups.
Fenix L1D CE Q5 or R100 will be the brightest, but the use of 14500 gives you a single mode light.
Olight T15 Q5 is just a bit below based on Selfbuilt's data. Never had one of these.
Next up will likely be the older Jetbeam MKIIx and Dexlight X.1, which go direct-drive with 14500. Very bright for a very short (~30 min) duration, but they do keep multi-mode capability. Low modes aren't very low with 14500, longest runtime on a low mode is ~6-7 hours (as opposed to almost 24 hours on alkaline).
Then comes the NCDI and Jetbeam Jet-I Pro, which have about the same output on 14500. I've never owned a Jet-I, but I can confirm that the NCDI is noticably dimmer than the Fenix or MKIIx/X.1 on 14500. WAY better regulation however.
I'm probably forgetting something.
Selfbuilt's threads are an AA goldmine, I highly recommend a read.
http://www.candlepowerforums.com/vb/showthread.php?t=186665