Shortest Sorted Hello World
///, 7 lines, 22 bytes

/
//Hello
,
 Wor
l
d
!


A rare chance for /// to be competitive (well as long as no one starts with Unary and Lenguage...).

The code first encounters a /, and parses the 

/
//


as a substitution instruction which removes all newlines from the remainder of the program. Afterwards, the program merely reads

Hello, World!


which is printed verbatim as it doesn't contain any further slashes.