The first is a lecture by Takemiya Masaki 9p on his choice of the “best selection of cosmic-style game”. He gives detailed commentary of the game between himself and Cho Chikun to decide the 1988 Kisei challenger. See https://www.youtube.com/watch?v=x-mC7AKWXA8.
The second video introduces several modern “AI style Josekis” in a lecture by Cho Zuiketsu 5p. These new moves are analyzed in detail using actual games between Cho and other pros as examples, including a very clever ladder-blocker that you don’t want to miss! Cho should be familiar to the western players as he was dispatched by the Nihon Kiin to the Seattle Go Center in 2018 and to Europe in 2019. See https://youtu.be/ZhRQnht3Gg4
The third video is given by Tajiri Yuto 5p on “how to use thickness for kyu players”. Tajiri visited the US Go Congress and the Seattle Go Center in 2019 and was a popular lecturer for the kyu players. In this lecture he discusses how to build and use thickness, an important topic as one moves from the kyu to dan ranks. See https://youtu.be/0mkARrIL5zQ