Old school incandescent bulb lights. Some people still love them based on the light "temperature".
LED.technology has gotten a lot better in the last few years being able to match the warm tint of the incandescent.
Incandescent. Regular bulbs, halogen, HID, doesn't matter, as long as it uses the principle of heating up a filament until it glows, it counts.
Similar to AM radio, quill pens and typewriters, functionally it's a thing for nostalgia buffs nowadays. LEDs have improved so much in CRI and offer the same CCTs, while also featuring much better battery life and a more compact form factor, so they've by and large supplanted incandescent torches.