In Japanese, but here is a test of the Panasonic dc-bgh1 + 16/1.4 lens. Still very costly for the entire system if automated capture is required, but the camera itself seems inline with other pro-sumer offerings.
For myself, at least for the moment, I'm sticking with the a7sII and 4K/30p - in fact, I found one used for sale a few hours ago, and it seemed a good price so I bought it (this one will be #4 if it passes inpsection). Very few seem to be available on the used market here in the UK (if you don't do ebay). Hopefully it'll be here tomorrow so I can do some tests indoors while it rains!
Edit to add: Apparently the Sony ZV-E1 might also be worth looking at but is as yet untested.