[solved] How to configure these simple single, oldskool RGB LEDs?

ESPHome
6

Like @Karosm said - use a single light component:

output:
  - platform: ledc
    pin: GPIO16
    id: gpio_16
  - platform: ledc
    pin: GPIO18
    id: gpio_18
  - platform: ledc
    pin: GPIO35
    id: gpio_35      

light:
  - platform: rgb
    name: "RGB Light"
    red: gpio_16
    green: gpio_18
    blue: gpio_35