Today I saw some new led from Samsung. Maybe some people here already know about it!
First is the Samsung LH181A
https://www.samsung.com/led/lighting/csp-leds/hp-csp/lh181a/#
The size is 1.91x1.91mm and up to 4.5W at 1.5A.
There is also slight bigger version, 2.36 and 2.8mm size:
https://www.samsung.com/led/lighting/csp-leds/hp-csp/
Finally, there is also very small led: https://www.samsung.com/led/lighting/csp-leds/mp-csp/
I am not sure which is useful, but maybe some forum people will like tiny led for best throw. The smallest is 1.15mm only!