From my understanding, Fu Zhongwen was the one responsible for spreading Yangshtaijiquan as is seen today but when the social climate 'improved', the Yang surnamed group took over.
I am familiar with the 'rice bowl' sphere, but more credit should be given to Fu Zhongwen for the birth of the Yongnian Foundation that allowed for Yang style to proliferate. Whether Yang Family, Yang Style, Yang etc ., that is a different matter