This one has lenses where you can slide them down to 18 degrees:
RUGO.
The Lume Cubes are a lot wider than them, maybe brighter too if you believe their specs which are also more blue than they confess up too. L.C. also makes a holder for them that fixes between the legs.
That said, LED lights are not that bright for stills unless you are at a high ISO (noise) and a slow shutter (blur). Likely you will need to be close too, <20 feet or so. Plus, the added weight will lower your flight time, maybe by half depending on how you fly.