Combined short and long term fuel trim looks consistently positive at all RPMs tested, so it's running somewhat lean. Both banks are tracking the same, so the cause of the lean condition shouldn't be something bank/cylinder specific.
Looks like at idle combined fuel trims are sitting at about 10%, then at 1800 it climbs to combined 15-18%. Normally I'd think fuel delivery issue, but then it seems to drop again when you go up to 2800, which you would not expect with a fuel delivery issue - should continue to get worse as there is more stress on the pumps. Not sure what would cause this kind of trend - maybe MAFs. Maybe not really anything more than dirty injectors as the uptick at 1800 RPMs is only by about 5-7%.
In any case, I don't really think this level of fuel trim (10-18%) points to a cause for misfire or even the code. It's outside normal range and maybe something to address, but I'm still thinking the misfire is caused by something else, and might be causing a spike in the lean condition and causing the fuel trim control code.
I guess I'd swap coil packs to see if the misfire moves. If it stays the same, then do the same with the plugs. Check the condition/connection of the plug wires. You have an SCV6 right? (too bad we can't see the pulse-width modulation the individual fuel injectors with this model - I think you can on the V8).
You could also track demand and actual fuel rail pressures at idle and at elevated RPMs (no load), then driving conditions (though it's kind of hard to read them when the throttle is bouncing around much), just to make sure fuel delivery is not an issue under load. Maybe run MAFS at the same time.
