Currently, my TV is set up with the following consoles, either in native HDMI or upscaled through an OSSC.
In no particular order:
Sega Saturn (RGB SCART line tripled through OSSC) [White Japanese Model]
Sega Dreamcast (Upscaled VGA) [Japanese]
Sony Playstation 2 (Component upscaled) [Japanese Standard model]
Retro Freak - Covers Famicom, SNES, Mega Drive, Game Boy/Colour/Advance, PC-Engine Hu-Card
Still very much a work in progress, but see some of my current collection here