Some offer continuous ship telemetry, but that’s mostly games that are more simulation focused and thus more grounded in reality - think flight sim. A few notable exceptions exist, like Fly Dangerous, that serves everything on a silver platter.

ED is a mixed bag. Some information is available in the JSON files it dumps regularly, where they can be consumed by various 3rd party apps, or your own. I’ve a writeup and a demo video of this specific part in an early state at simpit.dev/version-1/plumbing/

ED is however not very detailed and only dumps information if a certain threshold is reached. We get for example no airspeed in the files but we get latitude and longitude on a planetary and with the radius of the planet (yes, a game made me do Maths!11eleven) we can calculate some missing data to feed e.g. a primary flight display (the one that is stuck in the video - it does operate on a planetary ;-))