Thanks for the help everyone. I've tried looking up the words on the BIP39 word list and only 8 out of the 32 words match the words on the word list.

However, there are definitely clues that he didn't add the words just on the paper since he wrote it in the form:

In order:
1. word
2. word2
...
20. word21 word20
21. word21
...
32. word32

So at least that signals to me that these words were included ... However, the fact that so few of the words are in the words list is worrying. I can see a common theme in many of the other words though. They often seem to be biblical words like Heaven (made up example) or money related like (Fraudulent). Although I might just be seeing fake patterns here.

I'm guessing it's a lost cause overall though because it probably meant he used a huge word list right? If BIP39 has 2048. That means the added words were probably 8000 words. I know he didn't do this alone though, since he definitely wasn't tech savvy enough so, there must be somebody that created this for him. Or otherwise the electrum wallet - with the extended worlist might be on his old computer.