Complex sentence: Since splitting from NOLS in 1997, the ALS underwent various changes of name and political alignment, having also been known as NOLS Inc. (since they registered the name upon leaving the faction), or the NOLS Right.
Split into simpler sentences: Since splitting from NOLS in 1997, the ALS has undergone various changes of name and political alignment. They have also been known as NOLS Inc. (since they registered the name upon leaving the faction), or the NOLS Right.