Disk partion format for time machine back up.

I have 2 external drives on for Mac and one for Bootcamp
I'm trying to format my drive for time machine back up. There's:
Mac Os extended (Journaled)
Mac Os extended
Mac Os extended (case sensitive Journaled)
Mac Os extended (case sensitive)
What's the difference with all those??
Also I'm trying to format my other disk to be NTFS format but all I see are:
ExFAT
Free Space.
What's the difference? I'm trying to see what would be the best option for me.
Sorry if this is a very long question.. I also didnt know where this topic would go.

Look under Options in the Partition tab in Disk Utility.
For Windows, format under Windows.
GUID for Mac
MBR for Windows

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