the 'weird knock thing' right at the end of your log is some kind of small error in the datastream right as you stop logging. i wouldn't worry about it too much

if you've been 'dealing with rich conditions', according to your closed loop data you might have went too far. it's adding quite a bit of fuel to keep it running, with logs like this i usually start by making sure the hose between the maf and throttle body isn't leaking or the maf installed backwards or something like that.

it's hard to tell what's going on since you aren't really driving the car in the log, only stabbing the throttle for short periods of time. if you want to tune your base fueling properly, log for longer periods of time in more varied conditions