I know there's no Street Samurai archetype per se in CP2020, but it's kind of what pops in mind when we think about Solos in a cyberpunk setting. My idea of how this "style over substance" mentality meets the street samurai is somewhat along the lines of the movie Ghost Dog: this kind of character might be labelled as an anachronism, a madman/woman or even mentally retarded by people that look at them from the outside. They may be passionate about the way of the samurai, which might lead them to study the genuine thing as much as it's available to them, but they may also be the result of watching and reading too many crappy ninja and samurai movies and comics made in the USA (mainly in the 70s, 80s and 90s), written by people who didn't know jack shit about the real thing (ninjas with scimitars, a general lack of knowledge on eastern cultures which shows in improbable geography and mixed traditional clothing like they were the same thing...).
If we open the hand a little more, characters like the Preacher in Johnny Mnemonic fit this description, although this assassin has themed himself with exotic elements of christian monastic orders, instead of martial arts.
It would be cool if we could see this kind of "bad learning" in CP2077, not to repeat errors, but to acknowledge the quirkiness of this era and how the japanese elements were integrated in Hollywood culture.
It would also be cool if the game acknowledged the intrusion of japanese practices in businessmaking. Let me explain: at the time where cyberpunk was beginning to get a name as a subgenre, the japanese was an emergent economy (and the Zaibatsu -sometimes with some strokes of european neo-decadent nobility, see Tessier-Ashpool- made a good villain). There was such an interest in imitating the japanese model that some elements of eastern cultures that are superficial and extraneous to proper businessmaking were... assimilated like a simplified -assimilated- form of feng shui. etc.
So maybe we could have "sararimen" doing yoga at the top of the company's tower and shit like that. If Europe is also a rising economy in the setting... maybe there's some idiotic assimilation to make there.