Every release has its own verified Nsight Systems version (documented in release notes).
Which is also the one installed along with the SDK.
Below are the release notes of these releases:
There are new features in the latest Nsight 2021.x, like GPU metrics, tensor activities and so on, which are not included in the default Nsight comes along together with SDK manager installation for DriveSoftware 10 and DriveOS 5.2.x. According to https://developer.nvidia.com/nsight-systems:
Is it possible to use the latest Nsight 2021.x for DriveAGX at all? If yes, could NV please advise how to use it?
Or 2019.4 is actually the latest version of Nsight for DriveAGX?