If these three scenarios were Airproxes that would make an alleged 5 for the year and RAA would have a problem to fix, however:
One of them was a GA pilot bitching because an RA pilot didn't fly out to a fixed point in the circuit which was the best his low performance could do, and I wouldn't classify your experiences as airproxes.
You will certainly be getting a request to explain re the 737 if that one was, but in the lanes we are operating on visual beacons so we can fly very accurate tracks and the beacons are always on the same building. The tracks are much narrower than country pilots would be used to, so in my opinion the 737 pilot was comfortably settled on his RH side of the lane and he saw you in about the correct position on your RH side of the lane, so that would be operations normal to him.
I spent some time a while back showing the choreography of a busy circuit and how to handle speed adjustments, jocky for position etc. Most of that is without radio calls. So if you were heading towards the parachute aircraft and not in close proximity it would be routine and without radio to slightly alter course away from the potential contact point. If it was closer than that you should put in an Airprox report in case the other pilot has.
There's been a lot of discussion on experimenting with various low cost devices in the last couple of years; and it may be that they start indicating a potential problem but be aware that you have a legal oblligation to stay within designated lanes and you will be close; even closer if some clown comes barrelling towards you flying by car rules, staying on the left of the lane.
For these close-in convergences the Visual Flight Rules Guide Right-of-way rules are on page 056 in the 2024 VFRG.