I never really used Playlists, so I cannot comment on that, sorry. The only thing I do is subscribing to some channels in Invidious when I am on my PC and I do see them in Kodi. Usually I search for what I am interested in and that works fine for me in Kodi and Invidious. Invidious is still in active development, but you meant the Kodi Plugin maybe? I hope it is not abandoned and just not worked on because it still… works? :-)

I use the Kodi Invidious Plugin and my own Invidious instance.