I'm not an Aikido expert, but I've got a few years off and on in a number of schools. My Aikido experience is primarily with Iwama style, but I did a little Yoshinkan many years ago. It was right after the Hapkido school I'd been with for 5 years closed and I had moved cross country, which is kind of relevant for context.
Interesting videos.The Yoshinkan, like other lines such as Iwama or Shodokan, was started by a student of Morihei Ueshiba and remained independent from the main branch. It was thus not affected by Ueshiba's son's technical reforms which simplified the techniques and made them more "flowy".
Yoshinkan folks train with physical resistance and their kata are very strict, with an emphasis on proper positioning, structure and leverage. It's one of the best methods to understand the basic idea and principles behind the techniques which make up aikido's jujutsu arsenal. Gozo Shioda (the founder of Yoshinkan)'s book "Total aikido" is in my opinion THE reference book for basic techniques, for all styles. And some of the top Yoshinkan guys can do very cool stuff.
Ah also, Shioda's grandson Masahiro is a skilled and passionate young aikidoka who might one day become very influential within the school and conducts interesting research:
If that sounds like something you'd like, go for it.
What are your reasons for learning Aikido? Regardless of the Ryu it's basically still the same basic locks & principles. If it was me I would look at Tomiki Aikido. Much more interesting with a good Judo influence in there. They also have competition randori.