The various styles of xingyi and xinyi show much more variance than the various styles of taiji, which are still extantly somewhat similar.

However, the styles of xingyiquan look rather similar to each other; the styles of xinyiliuhequan look rather similar to each other; and the styles of xinyiquan practiced by the Dai and Guo families in Shanxi also look similar to each other. Externally, however, xingyiquan does not look much like xinyiliuhequan or Dai/Guo family xinyiquan. Xinyiliuhequan has some vague similarity with Dai/Guo family xinyiquan, but still looks quite different.

They are all of the same family in the end, though. It is always interesting watching people perform this or that style, so that you can see the similarities for yourself.

All for one, one for all!