I have not performed any in-depth statistical analysis on the collection of strings beyond Shannon entropy analysis and chi squared.
The Shannon entropy score is ~5.528939470219318, which according to the benchmark I am using:
* Standard English text usually falls somewhere between 3.5 and 5.
* Properly encrypted or compressed data of a reasonable length should have an entropy of over 7.5.

So at least from a Shannon entropy perspective, there seems to be a lot of repetition in the data set.