Savanna vs. Savannah: To 'h' or not to 'h' - Girl Names

Hello berries! [name]One[/name] of my favorite names is [name]Savanna/name but my dilemma is obvious. Is it better with or without the h? I have been using it without the h for some time now, but what is your take on to ‘h’ or not to ‘h’ with names like [name]Savanna/name, [name]Sara/name, [name]Nyla/name, [name]Hanna/name etc.? [name]Just[/name] wondering what you prefer.
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