Video games
YouTubers
Books
100

Starts with a M ends with a T

Minecraft

100

Starts with an S ends with an O

Slogo

100

Two words, starts with an H ends with a S

Hardy boys

200

starts with an R ends with an X

Roblox

200

Starts with a U ends with an E

Unspeakable

200

Two words, starts with an H ends with an R

Harry Potter 

300

Starts with an S ends with an E

Fortnite

300

Has two S's and two E's

Ssundee

300

Two words, starts with a U and ends with a S

(A series of) Unfortunate events