This is possibly the oddest compliment ever if it is your last name, but Witte is such a nice last name, you could put almost any name before it and make it sound nice.
I especially like how Ada Witte would sound.
I also LOVE Ada Elizabeth Witte out of the names you have there.
If you're still unsure about it, I also like the middle name Eve but I think it would sound better with a longer first name. Im not sure if you're baby naming, just exploring names or character naming, but you could use a longer first name with Ada as a shortened version. For example, Adeline, Adalia, Adelaide.