I like next channels:

https://www.youtube.com/channel/UCJs381WGd5fVICEOSSLDL4A

https://www.youtube.com/channel/UCKDSMJAKwHWEIY5YzhWyd_Q

https://www.youtube.com/channel/UCAPUmsVfTtiowWNSPQR8zeQ

https://www.youtube.com/channel/UCoDbIqejIAS9eZgYNzE2FCg

https://www.youtube.com/channel/UCPdUhp3L-Rxp_wigblquLtA

https://www.youtube.com/channel/UCBab4D0PcftG8-4RVNYhT3Q

What are yours favorite channels?