As usual long story short: https://packagist.org/packages/mitoteam/jpgraph.
We added patches to avoid PHP 8.2 warnings and some deprecation notices. Our internal tests are passing. Plus we have several confirmations from other users about no problems with PHP 8.2. So version 10.2.1 marked as release candidate and seems to be ready for production usage.
We'll mark it stable as soon as PHP 8.2 released (expected on November 24, 2022).