I wanna share some of my latest discoveries from 007 First Light, since this game shares a lot of assets with Hitman I was able to find some interesting things
posting it in this thread because it’s partly relevant and I don’t know where else it’d be posted (unless mods think it’s more appropriate somewhere)
First of all: one of the cut grenades from Hitman 2 (the smoke grenade) is in the game 
Same thing for the cut “explosive suitcase” from Hitman 2016:
And the “scrambler coin” (variation of the RFID coin):
I’ve also found this model named “suitcase_hmlogo” which is a pretty interesting one because I’ve never seen it before and the only references we have of something of this name is a placeholder suitcase from the Hitman Alphas (Image 2)
Next, I’ve found these two "sculpture_facade_ornate
" assets, variant C and G (both missing from Hitman, variant A is also not in Hitman but sadly also not found in First Light
)
Those sculptures are pretty cool to find because the only trace we had of them was this backdrop building texture from Paris (you can see the face above the door and the rectangle under the balconies), so I guess those are more leftovers of open world Paris 
The private jet used in Hitman cutscenes:
Now for more speculative discoveries:
I found this electric car from the Hitman brand “Cafard” (full name: Cafard Petite a50)
Everything seems to point towards it being a Hitman asset but the license plate is part of the texture (something Hitman doesn’t really do as they are randomly generated) and is also a Nevada plate (a location that is not present in Hitman nor was it planned as far as we know)
Lastly there is this explosive model used for the (spoiler) “laser tripwires” on 009’s boat, but apart from looking like a Hitman explosive, the textures are way more high-res than other explosives we have, it uses a modern texture style that Hitman didn’t use and every asset for it is under the First Light project folder
I just find it interesting that they could’ve used a different model like the actual tripwire mine from Hitman but decided to use/make this one, the camera thing on the side especially intrigues me and makes me think it is actually a Hitman asset that was repurposed, but I guess we won’t know for now