There are a few old things in WL and some that are newer.
Eight Chain Punch looks like 'wind behind the brain' method.
Cum La Sao looks like a variation of 'hook and smash'.
Shifu taught us, like "Shooting Star", "1 step, 3 punch" and multiple others.
This is from Zhang Bingdou. I think of these as the old roads of mantis and have written some articles on some of them.
I was asking if any of the other styles have similar "short forms".
Yes, 8 step, some 7*, taiji, Mimen and Meihua mantis all have overlap in these short exercises.
Here is one that you may know;
The Hooking Step of Mantis Boxing
One can be found here on 'one step three punches' This should look like yours, or at least very close to it.
Mandarin Duck Kick, or sometimes just called 'door closing kick' is trained as a short exercise in Mimen and Meihua. When I went to Visit Robert Hui some years ago, he surprised me by also having this exercise in his Tai Ji Mantis school. There is a close variation in 7* of this also. This article talks about the history of its founder Lin Chong as well as an application from Zhai Yao.
The Mandarin Duck Kick
Another one that you might know is the 'window frame punch'
These pictures of 18 Elders doing it are clear to follow. This is one of the first exercises taught in Mei Hua Tang Lang.
There used to be some old footage of Wei Xiaotang performing at least 6 of these roads. Mike Martello (rest his soul) and I had worked together many years ago to make that information available for all.
At this time I don't know if that footage is still available on the internet or not.
Anyway, hope that gives you some clue about those old roads of Mantis.
BTW, Why the interest in this aspect?