At present, most of the brand stores you mentioned are concentrated in Guangzhou City, and are not distributed in the area around South Railway Station.

The store closest to the South Railway Station should be the store in Kecun, Haizhu District. You can take Metro Line 2 to Changgang, transfer to Metro Line 8 in the direction of Wanshengwei, go to Kecun, then exit the subway Exit D and walk there.