(no particular order)

FunFunFunction (https://www.youtube.com/channel/UCO1cgjhGzsSYb1rsB4bFe4Q)

JustForFunc (https://www.youtube.com/channel/UC_BzFbxG2za3bp5NRRRXJSw)

Sam Bowne (https://www.youtube.com/channel/UCC2OBhIt1sHE4odV05RYP1w)

Ihatetomatoes (https://www.youtube.com/channel/UC7O6CntQoAI-wYyJxYiqNUg)

ferrisstreamsstuff (https://www.youtube.com/channel/UC4mpLlHn0FOekNg05yCnkzQ)

jackson gabbard (https://www.youtube.com/channel/UCcdCkJKXlRoXVD03eo-q8mQ)

=== edit ===

3Blue1Brown (https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw)