Photo/Video Led light Panel Leds? Are the leds in the panels the same?

Question is simple. Do photography/videography led light panels use the same led light bulbs
Do Aperture, Younguo, 1 x 1, Came TV... use the same light bulbs in their led light panels?
Prices vary between 100-300 and 1000-15000 USD for the same size light panels. I know they are different units, cooling, etc. but I am just wondering whether the BASICS of these units are the same: the individual light bulbs...Are the light bulbs the same?

In general I think that everyone is using the same type of LED for their panels. Some like CAME TV use high CRI (color rendering index) LEDs and others use lower CRI LEDs but all of them are trying to run at 5600K or so color temperature. I also believe (but don't know) that each LED is about $0.05 to $0.15 in high volume so even a 1000 bulb array has only $100 or so in LED parts in it.

Cooling and adjustable color temperatures and very fine control of brightness are all engineering challenges.

Bill