Since you mention YouTube, I quickly compile a list of Westerners who have lived some time in China, i.e. not tourists. To help people make decision if they are brainwashed. But usually "Brainwash" means brainwashed people can not find they are brainwashed.

List A: These 2 guys are thinkers then others. They should be working on different job. Expecially in Western intellegence to help westener better undrestading China)

1. Cyrus Janssen(American)

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

2. Daniel Dumbrill(Canadian)

https://www.youtube.com/channel/UC6Bl8MTbW9M9MQoPhxbarpw

List B: (Positive)

3 Matt (American)

https://www.youtube.com/channel/UC8Ykci4MKSSdTJYuYp53G7A

4 Gweilo 60 (Canadian. Mainly positive. He also talked about negative side)

https://www.youtube.com/channel/UChXOhG9bRDb3vSTg-qkPAZg

5 Jason(British)

https://www.youtube.com/channel/UCzDE2LGSmJnw53WrZ7mM_Aw

6 Nathan Rish(American. Seem a little opinionted)

https://www.youtube.com/channel/UCaSlyjhR4WC7QhYuaivxb6g

List C: (Negative, but was positive)

7 serpentza (South African, the oldest vlogger about China)

https://www.youtube.com/user/serpentza

8 laowhy86 (American)

https://www.youtube.com/user/laowhy86

(edit) reformat