Ok there are a few things it could be.
You’ve replaced the pawls and the freehub bearings.
The next things to check are the actual freehub body where the pawls are housed. The solid bits between the pawls should be smooth, but often they can get chewed up when the bearings develop play and the can get gouged by the ratchet ring inside the hub body (the bit the pawls engage in). Often they will be marked along the length of the freehub body, perpendicular to the rotation direction. A fine file can be used to smooth these out.
The other thing to check is the ratchet ring itself, all teeth should be the same height etc, but when they wear or play develops they can become mis shapen, catching on the freehub body.
On mine one of the teeth had “peeled back” and was prouder than the rest, catching the freehub body as it turned. You might get away with filing it down a bit, but really its new ratchet ring time.
This is bad news, because Hope told me in July whislt they can replace them, but they no longer have any ratchet rings in stock and wont be making any more. I got lucky, as BETD had one left that they fitted to mine. But I have no idea where you can source one now.