Somewhere in the middle of the article, I stumbled upon a multilanguage sample and noticed that this font has wonderful Cyrillic glyphs. In my previous experience with new fonts Cyrillic usually is not as great as the latin part of the font. The exception being fonts done by foundries based in cyrillic speaking countries, like ParaType fonts [1]. Well, the last third of the article goes into the details on how they achieved it.
[1] https://www.paratype.com/fonts/pt/yefimov-sans?tab=gallery