It looks like Retro Gaming Cables has received a new batch of Dreamcast connectors to be used in their upcoming RGB cable. This cable will support 240p & 480i just like their current cable, but will also include a sync-combiner circuit that allows 480p to pass-though SCART as well! This means people with 490p-compatible monitors and processors can use this one cable for everything!
https://www.retrogamingcables.co.uk/sega/SEGA-DREAMCAST-RGB-SCART-CABLES