Lockscreen shortcuts are coming in the next release, it's already been implemented.
It is unclear if we'll get the custom clocks, as at least part of them seem to be Google apps, not AOSP components.
In general, not every feature you find in the Stock OS is enabled by default in AOSP.
GrapheneOS' focus has been on porting all of its changes to Android 14 and making sure we have a stable release. This is important because Android 14 contains the latest patches, and porting and having users update to it ASAP is paramount. Now that we have an initial Android 14 release, final touches can start being addressed/added.