Complex sentence: The label followed with releases from Perry, Swi.T, Big Mama, Lexy, Gummy and Wheesung, and created the YG Underground label, which housed 45RPM and Stony Skunk.
Split into simpler sentences: The label followed with releases from artists such as Perry, Swi.T, Big Mama, Lexy, Gummy and Wheesung. YG also created the YG Underground label, which housed 45RPM and Stony Skunk.