I bought Gateron Clear, Yellow, and Green. At 23 cents per switch, sometimes even lower, they are perfect for my need. Each type of switch's actuation force, behaviors, and sound levels work as advertised.
LEDs are soldered to a PCB. That is how the LEDs get power. SMD LEDs are used with hotswap boards. Some LEDs passthrough the switch, this makes customization hard because the switch and LED would need to be desoldered to install new switches