The Futur https://www.youtube.com/channel/UC-b3c7kxa5vU-bnmaROgvog

Not what you asked for, but I was subscribed to many of them and they are not really what I was looking for. I don't need another sketch plugin digest, figma advert or 7 hour tutorial explaining framer, or a screencast of how to design something completely irrelevant in sketch. A lot of designer's youtube channels are also just personalities trying our their NLP Skills, so I just unsubbed again.

If you are looking for design content on youtube, then you are probably gonna be more satisfied by watching conference talks.

In addition to the ones mentioned already:

AJ&Smart - All things Design Sprints - https://www.youtube.com/channel/UCeB_OpLspKJGiKv1CYkWFFw

Charli Marie - Designer at Convert Kit - https://www.youtube.com/user/charlimarieTV

Zimri Mayfield - Design maybe questionable but fun guy to watch - https://www.youtube.com/channel/UCbqd2YmFeHMwxlj4NcN5zPQ

Will Paterson - Amazing logo designer and handlettering artist - https://www.youtube.com/user/breakdesignsco

MDS - Not a lot of content but still some cool vids - https://www.youtube.com/channel/UCYMKd37bdxI-qj3f3z6U6_g

FLUX by Ran Segall: https://www.youtube.com/channel/UCN7dywl5wDxTu1RM3eJ_h9Q

Someone needs to fill the gaping hole in my life left by Dann Petty and Pablo Stanley :(

I watch the The Futur on YouTube occasionally. They are currently running a series called Building A Brand, which is split up into different episodes. They show their entire process on how they build a brand from the first meeting to actually designing a logo and so forth. They cover a lot of topics related to design though; check them out. Not saying it's perfect or anything but I enjoy it and think some videos are really helpful.

The Futur (more entrepreneurial stuffs for designers) https://www.youtube.com/user/TheSkoolRocks

The Futur Academy (more actual design content) https://www.youtube.com/channel/UCqHuGF2axS8Yf89r1tUVS_A/featured

Satori Graphics https://www.youtube.com/channel/UCoeJKtPJLoIBqWq4o8TDLpA/featured

Bont (by Adrián Somoza) https://www.youtube.com/channel/UCrSd3NeTWwz1cPgzp8BAqYg/featured

+1 for Zimri Mayfield, it's not for seniors, but just entertaining to watch!

https://www.youtube.com/channel/UCbqd2YmFeHMwxlj4NcN5zPQ

I cover a lot of UI design and frontend development: http://youtube.com/user/designcourse

The one and only https://www.youtube.com/user/BobRossInc

Steve Schoger, https://www.youtube.com/channel/UCxqiDtkXtOCNJdckODHk9YA

These are pretty much all the design channels I follow. In no particular order:

1. Femke (Product Designer at Uber) - https://www.youtube.com/channel/UCWUGGwfTfJ0-2jUS3dZqOJA

2. Charlie Marie - https://www.youtube.com/user/charlimarieTV

3. Jesse Showalter - https://www.youtube.com/user/JesseAtomic

4. DesignCourse (Design+Development) - https://www.youtube.com/user/DesignCourse

5. Flux (Ran Segall) - https://www.youtube.com/channel/UCN7dywl5wDxTu1RM3eJ_h9Q

6. AJ&Smart - https://www.youtube.com/channel/UCeB_OpLspKJGiKv1CYkWFFw

7. Caler Edwards - https://www.youtube.com/user/CalerEdwards/videos

8. Christopher Deane - https://www.youtube.com/channel/UCRfTv-QsCHhx-S8kcOgO2dg/videos

9. Dansky - https://www.youtube.com/user/ForeverDansky/videos

10. Dann Petty (Legendary in Design Community) - https://www.youtube.com/channel/UCTOwGti_mRb2J1JfTdIkg_w

11. Pablo Stanley (InVision)- https://www.youtube.com/channel/UCZHkx_OyRXHb1D3XTqOidRw

12. Howard Pinsky (Adobe XD) - https://www.youtube.com/channel/UC48fSJKMFBka3Zl0u7DGf0A

13. MDS - https://www.youtube.com/channel/UCYMKd37bdxI-qj3f3z6U6_g

This is mine. It's still in the baby phase but I hope to add more good quality content in the future.

https://www.youtube.com/channel/UCCgaKuRMOV_dH3kuaaHPzvA?

We go live every once and a while over at uihacker :) https://www.facebook.com/uihackers/

Ben Marriot is almost exclusively After Effects tutorials, but he has some of the best free tutorials I've ever seen. Better than a lot of Skillshare courses. He will just drop a hot tip in the first 2 min that blows your mind but has nothing to do with the tutorial. https://www.youtube.com/user/benmarriottart

Not design specific, but visual effects artists/videographers will like MAKE.ART.NOW

https://www.youtube.com/channel/UCmRE4gvdeDkwf1oJrsabWWQ