So far, there are a LOT of them now a days.
Obviously, any light can whack at a bad angle, etc, can go down for the count...but, for me at least, the ones that I have that take a lickin and keep on tick'n: (no "order")
Klarus XT11 and XT20
4Sevens S12, X10, S18
Zebralight SC600
Olight SR90
Surefire 6P, C2 and Fury
Nitecore TM11
Jetbeam RTT 3 XML
I have other lights, but, I didn't list them because I might have only dropped them onto rocks, concrete, into lakes, etc...too few times to KNOW if they could do it over and over again. Some may become part of the list if they suffer more/additional abuse.
I mean, I have lights I've NEVER dropped...I don't do it on PURPOSE typically....except the Klarus XT11, which gets thrown at walls, etc.... from time to time to make a point, and is my beater EDC anyway.
I also have other lights I DID drop, etc, and they broke and or seemed to take it poorly, and I consider experiments....and are not listed. :D
As you mentioned regulation, etc...I have some bomb proof unregulated I didn't list either...like the Invova X5, ElektroLumens Big Bruiser, etc.