Liang Xuexiang (LXX) is as far back as I can go as far as a solid person is concerned. We can be highly confident that the lineage of his as listed by his grand student is correct.

Comparison of LXX's Luohan Gong compared to the Shan Xi Chuban She version.

LXX,s the only manuscript that correctly writes the term 雙耳貫孔蟬了了。 So, it is highly probable that Heaven Ascended Taoist is an alternate name on someone on his family tree.

The Hao family is the only one that has a form called Louhan Quan. And this Louhan Quan follows closely the Luohan Quan in Heaven Ascended Taoists manuscript. And yet, it's 3rd road is the first road of Xiao Fanche.

There is a long distance between Hao Jia Plum Flower Mantis and Seven Star, where some schools attribute their Xiao Fanche as coming from. It also appears in Eight Step Mantis.

Luohan Quan and Xiao Fanche are what mantis looked like before the split into the various families.

And for those of Wah Lum, these forms that predate the split follow very closely Iron Door Bolt (called Little Mantis in the states).