Just to add to the already good info above, basically there are two ram species: altispinosa (Bolivian) and ramirezi (Venezuala, Columbia). German blue, fish farm/tank raised blue of whatever country, long fin blue, or electric blue, they're still basically ramirezi, just different lines or strains from the original fish. German blues have a good reputation-- or did-- and a lot of blue rams come with the name, whether because the original breeders of the strain were German blues, the breeder/seller is piggybacking on the good name of German blues, or simply because it's the popular name marketed to fishkeepers. But, as mentioned already, German blue ram doesn't always mean bred in Germany or same quality as the original German blues.
My sense is a lot of the ramirezi available today aren't the same quality as years ago. Just my supposition, since when I had them 20 years ago I didn't find them to be as delicate or difficult as what I've heard lately.