For same style, I would suggest
Abeline
Adaline
AdelineAdoline
AlineAmeline
Anneline
ApollineAuraline
Aureline
Auxiline
Berline
Coraline
Cordeline
Eweline
Fraukeline
Fredaline
Friedoline
Gerline
Isoline
Juline
Karline
Magdeline
Noeline
Odaline
Philine
Ursuline
Wendeline
First, I would say Otto-leen-neh, then Otto-leen.
This name is ok, imho, it's not exactly brilliant.
Same applies to
Ottilie, that didn't blow my mind, a back number & antiquated.
(or
Cäcilie,
Emilie,
Odilie & Zäzilie)