My youtube recommendations vary over the years, I'll watch some creators and then drop them for a while as I check out other stuff. These are the current channels I've watched the most of over the last 6 months.
Gaming:
YongYea (Game news, but I haven't been watching him as much lately) https://www.youtube.com/channel/UCT6iAerLNE-0J1S_E97UAuQ
GameSack (great reviews of retro games) https://www.youtube.com/channel/UCT6LaAC9VckZYJUzutUW3PQ
Slope's Game Room (I've been watching the retro game documentaries) https://www.youtube.com/channel/UC455p7ts9lh8IWi5zuf_8tQ
Cinemassacre (Angry Video game nerd, they haven't been as good as the old episodes) https://www.youtube.com/user/JamesNintendoNerd
Gaming Historian (More great video game documentaries) https://www.youtube.com/user/mcfrosticles
Comics:
Comics Explained (basically comic book story documentaries explaining entire story arcs) https://www.youtube.com/channel/UCKxQmKgrkUv4S7P5w0pLayw
Movie & tv series reviews, breakdowns for easter eggs:
New Rockstars https://www.youtube.com/channel/UC7yRILFFJ2QZCykymr8LPwA
Everything Always: https://www.youtube.com/user/clearlyhereagain
Comedy:
ExplosmEntertainment (Cyanide & Happiness) https://www.youtube.com/channel/UCWXCrItCF6ZgXrdozUS-Idw
BBQ:
Ballistic BBQ https://www.youtube.com/user/sd4547
HotToBBQRight https://www.youtube.com/user/howtobbqright
Guga Foods: https://www.youtube.com/channel/UCfE5Cz44GlZVyoaYTHJbuZw
Science & Education:
PBS Space Time (Amazing series) https://www.youtube.com/channel/UC7_gcs09iThXybpVgjHZ_7g
Kurzgesagt – In a Nutshell (One of the best animated science channels ever) https://www.youtube.com/channel/UCsXVk37bltHxD1rDPwtNM8Q
Brew https://www.youtube.com/channel/UCVQGtUcRjHTQLTTu-5s9_4Q
BRIGHT SIDE https://www.youtube.com/channel/UC4rlAVgAK0SGk-yTfe48Qpw
Handyman and home improvement videos:
Home RenoVision DIY (This guy's videos are amazing) https://www.youtube.com/channel/UCnorhjQR4zJkT7AVNhu395Q
Vancouver Carpenter https://www.youtube.com/channel/UCbZdXox6mKHdcT2QdVT-goQ
Exercise: (I mostly watch videos for no weights exercises)
ATHLEAN-X™ https://www.youtube.com/channel/UCe0TLA0EsQbE-MjuHXevj2A
Jeremy Ethier https://www.youtube.com/channel/UCERm5yFZ1SptUEU4wZ2vJvw
BarbarianBody https://www.youtube.com/channel/UCduSVNApvBELfswY_ElMkOw
I also like to do women's Pilates exercises but I haven't narrowed down specific youtubers for those yet. I mostly watch old dvd videos we owned that I transferred to digital format and stream off my plex. lol.
Edit (I forgot to add my plant and lawn care category, lol. I might re-edit this later).