Here are my thoughts:

Boxxy: ESE? I might also consider ESI.
Pewdiepie: ESE
jacksepticeye: ESE
Carrie Hope Fletcher: ESE
Trisha Paytas: SEE!
Vihart: ILE?
Antastesia: EII? could be IEI also.
Philosophy Tube guy: ILE

Yeah, lots of ESEs and Merry types.