If you need 8K60fps you would need to look at a top end dedicated mirrorless right now.
Unless you are planning to post crop the footage there isn't a huge call for the current 8k30fps yet as mentioned by other Members here.
You can get either 4k60fps pixel binned video for better low light performance in Samsung log HEVC for better file size efficiency to internally record and no time limits in the Samsung app.
Or If you need better quality footage free of macroblocking right now on a phone with a good CPU (Ideally Snapdragon) avoiding the intra frame compression container formats to edit you can already shoot Opengate 4060x3060 RAW 60fps in your preference of Log in the MotionCam Pro app to a SSD on a heavy duty gimble to edit in Divinci Resolve once converted on pc as long as your runtimes aren't too long, as the phone will overheat without a good magnetic cooler. This will give you better sampling but at the cost of the app and considerably more investment in time for editing.
You can also shoot via software capture ProRes Log in MotionCam Pro for shorter runtimes for smoother post editing on lower power iOS, Mac and PC (With a dedicated GPU) with a smaller file size than RAW in say standard ProRes for a compromise of limited macroblocking and resistance to re-encoding between editors working on the footage if you are doing this with colleagues or friends. If you choose higher quality ProRes like HQ+ ect it is very taxing but apps like this push the limits of what Android phones can do right now so it's to be expected without dedicated hardware encoders/decoders. Which are unlikely to materialise considering the very slow push for the APV codec.
