I know Reylight. I have the Brass Pineapple v1 (1xAA). I use 14500 in it. It's one of my favorite lights. I put a Trit in the tail. The Ti LAN is obviously smaller (being AAA), Ti and has a bunch more Trit slots. Raylight are solid builds at a decent price. I see Reylight between "mass produced" and customs market. IMO these are fun/show lights rather than for EDC. @OP - you might want to look at the - Astrolux Ti3A Titanium Nichia 219C It is an AAA light with a twist on (not tail button) & a trit slot in the tail (if you want to get really fancy). It's not rated to run with 10400's though. or DQG XP-G2 Tiny AAA/10440 Titanium Also a twist with trit slot in the tail
The ReyLight Ti mini arrived today, and with the Preon Mk III that arrived some weeks ago, I think that concludes my search for a AAA titanium light in matt finish. The Preon is a wee bit larger than the Tool AAA, with pretty similar performance, but feels like a higher quality product and especially the switch seems much harder to accidentally activate. The ReyLight is a wee bit larger than the Preon, but still maintains the true feel of a AAA light. It has a Li-ion power source and seems to more than make up for its larger size in output. To early to roll the dice, but seems like a very potent light.
Browsing AliExpress for something entirely different, I ran across these: https://de.aliexpress.com/item/4000709386242.html?spm=a2g0o.cart.0.0.482f3c00ESP9CN&mp=1
You can get a brass trit insert that goes in the end. However, they are twisty lights, if that's a deal-breaker.
Thanks for that picture! I currently EDC a brass Lumintop Tool (from Massdrop), but I have been eyeing the AAA Reylight because it adds a trit slot and 10440 support.