[table] 
[row] [cell]
COMPARTMENT 1
[list]
[*]Slyterin Quidditch Team
[*]
[*]
[/list]
[/cell] 
[cell]COMPARTMENT 2
[list]
[*]Dani
[*]Pearle
[*]Pete
[/list][/cell][/row]

[row]
[cell]COMPARTMENT 3
[list]
[*]Julius (and Rocky)
[*]Jake (and Martin)
[*]Moriah (NPC)
[/list]
[/cell] 
[cell]COMPARTMENT 4
[list]
[*]Alric
[*]Nathaniel
[*]
[/list][/cell] [/row]

[row] [cell]
COMPARTMENT 5
[list]
[*] Charlotte (and Indiana)
[*] Caelum
[*]
[/list]
[/cell] 
[cell]COMPARTMENT 6
[list]
[*] Chandler (and Castile)
[*] Nolan
[*]
[/list][/cell] [/row]

[/table]

OKAY! Here is my best effort at a table!!! 

The top is the front of the train car, the bottom is the back of the train car.

There is a hallway between the compartments running down the middle (not depicted, could not figure out columns)

SOH this is how I think things should be configured... Does anyone have something else in mind? DID I miss anyone? Spell anyone's name wrong? Want to swap? Let me know!