All these movements are the same

[Sal Canzonieri]

There is a major movement/posture that seems to be in common, with slight variation (due to chronological and stylistic evolution), between all the following styles (in Chronological order):

Tong Bei Quan: Pi Shan Zhang - Split Mountain Palm
Shaolin Chan Yuan: Li Pi Hua Shan - Forcibily Split Hua Mountain
Shaolin Luohan 13 Gong: Lao Seng Pi Chai - Old Monk Splits Wood
Shaolin Yuan Hou Quan (Ape Monkey Fist): Shrink body Double Acknowledge Fingers - Su Shen Shang Ren Zhi
Shaolin Rou Quan 36: Turn Body Right, Plundering / Intercepting Hand - Zhuan Shen You Lu / Lan Shou
Yue Jia Quan and XY: Splitting Fist - Pi Quan
Yue Shi Ba Fan Shou - Strike Side Face Palm - Pu Mian Zhang
Hua Quan 18 Luohan: Ying Qia Suo - Eagle Seizes Gullet
Shaolin Xiao Hong Quan: Turn Face Right, Pulling Hand - Zhuan Lian You, Ban Shou
Shaolin Tai Zu Chang Quan: Turn Right, Face To Face Pulling Hand - Ying-Mian Ban
Chen TJQ Yi Lu: Lazy (Block) Tying Coat - Lan Zha Yi
Yang TJQ: Grasp Sparrow's Tail.

All these sets do this movement near their beginning as they turn to the right.

MOST of these sets follow it up that above movement with a variation of "Single Whip" and most of them call that next move "Single Whip" even if it looks different.