Edit: last released leak showed they had broken the then most recent iOS release (17.5.1) in AFU state on all but the most recent hardware which was marked "available in CAS"
https://discuss.grapheneos.org/d/14344-cellebrite-premium-ju...
The good news is neither pixel nor iOS seems to show full file system extract under BFU state in the recent tables I can find.
GrapheneOS has access to the latest Cellebrite Premium documentation since we have a contact able to share it with us. In April 2024 and then July 2024, we posted screenshots of specific capability tables from the documentation but then stopped doing it because it could result in losing access to it. The contact sharing it with us was still fine with us doing it but later came to the same conclusion we did that it's best not to post anything from it. Cellebrite doesn't like it being posted publicly even though it's essentially marketing their products, probably because it results in pressure on Android and iOS to stop it happening.