Thereās several other comments here that are probably enough for you, with links to good reviews sites that I also didnāt know before.
Anyway I wanted to add something else, hopefully itās not added noise and you may find it useful.
I have tested lots of system just because Iām a gearhead and like to play with tools. I started as a Nikon guy and surely I must have said something like āIāll never buy Canonā over the years. And now guess what, I have a Nikon DSLR (D810) and a Canon mirrorless (EOS R).
I have also extensively used m43 and Fuji cameras; Iām not rich by any means, but I simply bought everything second hand, and I have never, ever bought the very expensive glass like the white Canon zooms or the f1.2 beasts etc.
Due to the kind of photo that I like to take, the 50mm has always been a constant on all these systems; itās a generic, boring lens that does not impart anything special to the photos and I like that, it forces me to be a bit more creative. Additionally this is a cheap lens to make and there isnāt really much difference between a generic 50/1.8 and a 50/1.2; the better optical qualities are not worth in my view the extra cost, bulk and portability. Also, I keep reminding myself how Galen Rowell preferred consumer-grade equipment rather than pro lenses because of weight and size (and in fact one of the lenses that are very dear to me is the Nikon 70-150 f/3.5 E-lens that Rowell used so effectively in some of his most outstanding photographs).
Therefore my personal approach is to go for lenses first, then cameras. And since all the systems have more than one 50mm option, this is easy, I can choose between all kind of systems really. So thatās what Iāve done, hopping from Nikon (D)SLRs to m43 cameras to Fuji and Canons, always looking for the perfect combination of reliability, portability and effectiveness.
Iāve never been bothered by the qualities of the sensor underneath, as getting good light and making interesting composition are the most important factors for my photographs (not staged, not studio, natural light); so I have now photos that Iām very proud of that have been taken with a Fuji X-Pro1, Olympus EM1, Nikon D600, Canon RP etc, there is nothing that makes me say oh I wish Iād have had a Sony 7RRR with its 80Mp BSICMOS instead because I could have pulled an extra stop from the shadowsā¦ this is totally irrelevant for me.
One last thing, regarding the examples you showed us; keep in mind that I was blown away the first time I tried to take photos with artificial light (simple speedlight with very basic modifiers); the extra crispness and clarity of photos taken in controlled situation is simply incredible for those of us that are usually relying on natural light (Iām talking obviously about portraits). Perhaps that would explain why you were also impressed by photos taken with the same lens you have; anything, any lens would shine a much brighter light, so to speak, if using speedlights or strobes.