Found this helpful picture guide on Redit, full credit goes to member “DrTautology” I saved a copy in case the picture vanishes.
Redit thread can be seen here Reddit - Dive into anything
Also check out this CRX post on BLF a long time ago https://budgetlightforum.com/t/-/23020 . Haven’t seen him around for a while. There is lots of other useful led information in this post too.
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Thanks guys :+1:
One can never have enough LED info at your fingertips. 
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Sweeeeet.
Thanks for sharing this, Alex. VERY useful to see the breadth of mcpcb based LED’s available. I was wondering if they’re all to scale relative to each other—no, but the link above shows a GIF that illustrates comparative size.
Still kind of amazing how Osram CSL and CUL series are comparatively so small and flat, yet capable of such generous output.
Oh really… 
Maybe now on reddit someone will refer to this thread with handy leds-picture, with full credits to Alex of course 
I’ve always been amazed at the amount of flashlight info CRX has compiled and shared with BLF!
Just by chance way back I clicked on the LEDs & Other Stuff link in CRX’s signature and was blown away!