I don't believe so. How I understand it is that they are an anomaly, only existing under the circumstances that created the ones in Karda Nui. The Shadow Leeches were manufactured from kraata, and were a relatively new invention, and there is no other known creatures that can do what they do, outside of a few mutations, that happened AFTER the leeches were created. (I.e. Gorast's stinger). In addition, it's a prefix, it's a part of the matoran language, anything shadow related may have this prefix. The Kraahkan for example, has the letters Kra at the front as well.
Also, according to BS01 the Shadow matoran were artificial.