only critical updates
There's no such concept as this and there never has been for Windows 10 or 11. We simply don't and never have made individual updates available (expect for zero-day scenarios) for Win 10 or 11. The cumulative update model ensures a common testing and run-time environment for all software and organizations significantly reducing the number of possible permutations that customers, vendors, and we need to account for. This is completely unrelated to Intune or Defender, it is Windows specific.