If you want to see a whole book of Du Yi Ze's Chen Lao Jia set, you can get a book "Chen style Tai Chi Chuan Lao Jia" by He Hong Cai 何宏財
The book is all about the Chan YanXi version of Chen, and you can see the names of the moves and how to do the set step by step.
History info in the front of the book.
You can order it here:
https://www.plumpub.com/sales/chinese/chinbks_trad16TC.htm$24.95 Traditional Chinese Characters;
139 pages, color photographs
"This is a beautifully photographed color representation of the Chen Taiji Lao Jia set as it is practiced in Taiwan. These teachings from one of Taiwan’s best Chen instructors, Du Yi Ze, or Du Gong, continue the instruction from Chen Yan Xi the father of Chen Fa Ke. This is actually the version of the Chen we practice and, though it has little of the extended postures and more expressive movements of much modern Chen Taiji, it does contain a solid and smaller frame version which harkens back to such pre twentieth century forms as the Chen Small Circle and the Thunder Style. This is because Du was said to have studied from Chen Yan Xi, the father of the famous Chen Fa Ke. A nice presentation."
I found it that it is smaller frame than Chen Fake version, which means a lot.
AND some names of the postures are like Yang TJQ. such as 'Embrace Tiger, Return to Mountain' and a few others not seen in modern Chen.
Which is another clue to think about.
Also, there are more postural movements, a good number more (again gets like Yang TJQ).