$6.76 Kaidomain unbranded 501B host
kaidomain and convoy has drivers, mcpcb.
Luxwad did a great write up if need a refresher on some of the new LEDs
Quick Guide to Popular LEDS - UPDATED FOR 2024
Tear downs are pretty uncommon. they are scattered across different threads here and on reddit. Tom E used to do regular teardowns but he hasn’t been seen in a while. tear downs on review sites are also pretty uncommon unfortunately.
Convoy sells some Buck/boost drivers which are more efficient than the old linear 7135 / fet designs
p60 drops have been superseded by threaded pill design/integrated shelf. sofirn, convoy, wurkkos are good starting points if you need newer lights budget branded lights.