So, i ended up my research, all left I can do is to contact people from former TechnoSource, who were very likely involved. If one will help me to reach them on LinkedIn, I'd be grateful. I'm lacking Premium to send more messages :/ If you have an idea for other means to reach them, I'm open.

Yes, volleyball is an Intellivision game, hovewer it looks like Intellivision 10 in 1 and 25 in 1 versions are different, probably a hack, wiki mention s it.
And thanks for showing me how strong the correlation is. Hovewer, there is still a minimum of doubt in me and I'll be looking further

Hello everyone! Pegasus affictionado with famiclone-scene activity that can be traced back to 2008 here. I'm here to continue a research I started on atariage: https://forums.atariage.com/topic/341063-atariintellivision-flashback-classics-on-nes-review/#comment-5330446

Recently I've been doing intel regarding NES clones of Atari Games, starting from Atari Flashback 1, which for sure IS a NOAC. However, authorship of the games is somehow disputable. Wiki says it's nice code, https://bootleggames.fandom.com/wiki/Nice_Code_Software however, I lack any hard proof for that. wiki says Nice Code is believed to have programmed officially licensed ports of Atari 2600, Atari 7800, and Intellivision games to the Famicom for use in plug & play systems. But why? because Flashback games are cross-found on consoles with a lot of nice code shovelware? I cannot trust this argument, as Chinese companies copied each other in other occasions.

Intellivision raises the same question, as there is no hard evidence. I found out that Blue sky Rangers were involved in releasing those consoles, but who coded games?

There are earlier Activision 10-in-1 and Atari 10-in-1, which are commonly believed to be a NoaC consoles, hovewer, shared games between atari 10-in-1 and atari flashback, like adventure, are totally different. I doubt these are famiclones but rather winbond-compatible, but maybe, just maybe, DC-studios, who made games for these consoles, did also flashback games? They gad GB games in portfolio, and their founder is a c64, so 6502 know-how was there.

As for missile command, which is said to be undumped, this is probably not NES game. As I said, 10-in-1 is most likely not noac, and atari keychain is not as well - this topic suggests that Digital Eclipse Vancouver used winbond-compatible instead https://bootleggames.fandom.com/wiki/List_of_Undumped_Games

Finally, we have Blaze mini arcade, which looks like it has flashback version of Adventure, Sprint Master and Gravatar, DIFFERENT version of Yar's revenge and nowhere-else found 2600-centipede recreation
https://piped.smnz.de/watch?v=RuBy8rVjlQs
However, this is #2. Atari Mini arcade #1 was released at the same time, and it uses ARM f1c100, as seen in this video https://piped.smnz.de/watch?v=9du237nO26M. Would they use different hardware for other console released in the same time and in the same series?

I'd be grateful for any evidence-based response, as I'm sick of clues after long time internet scrapping. If there is any member who owns those consoles, show up, for we need these as our research material.