I love [name_f]Johanna[/name_f], but not [name_f]Joanna[/name_f]. [name_f]Glad[/name_f] to see some love for the H. I tend the think of them as different names with different pronunciations - [name_f]Joanna[/name_f] is joe-anna and [name_f]Johanna[/name_f] is joe-hah-nah or joe-hannah.
I love the name [name_f]Johanna[/name_f]! I like it more than [name_f]Joanne[/name_f] and [name_f]Joanna[/name_f].
[name_f]Joanna[/name_f] is my favorite -anna name. I do prefer that spelling, but [name_f]Johanna[/name_f] is nice as well and I’d probably use it. 
(Obviously not both at the same time, haha.) I don’t know about anyone else, but I really like the nickname [name_u]Jo[/name_u]!