I also have the identical shot cartridge, R A 53 in my own collection. Not sure who actually loaded them.
Number one may be a Glaser. If so, it is a fairly early one. I have two specimens with similar deep-seated or short bullet, not sure which as have never disassembled one. However, the nose plug, also blue in mine, is flatter in each one of mine, with one larger diameter than the other, and both larger than the blue nose plug of the one you show. I think Number 4 is a Cor-Bon Power Point load, not a Glaser safety slug. Mine has a W-W headstamp. Mine, however, has a very dark grey tip filler, almost black so may be yours is an early Cor-Bon made Glaser, after they bought out the Glaser Company.
The pointed one may be some form of French Arcane. Is the bullet turned on a lathe-like instrument? Mine is a non-magnetic bullet, and is not as sharp at the point as is yours. It has a flat meplat, but a very tiny one. Yours appears to be “Needle sharp.” Mine is in a W-W case, but then you can likely find any of the Arcane rounds in various commercial cases; whatever was available to them at the time.
I think Pete was pretty much right on in his ID of these rounds.