Welcome to you and Louie. He looks like a real sweetheart.
What were Louie’s parents registered as? That will answer definitely what he is. If mother and father were miniature, then he’s an oversized miniature. If his parents were Standards then he’s a very small standard. If one parent was a mini, and one standard then he’s an intervarietal. If you don’t know what his parents are, then he’s just and adorable Poodle.
Most countries don’t not have Klein size, also known as medium or moyen. The only countries with Klein size are members of
Fédération Cynologique Internationale (FCI) If you had imported him from a FCI country or he was from imported parents from a FCI then he would be a Klein in the German speaking countries.
I believe he’s a cream.