All I’m going to do now is plug the following competitor domains into SEMRush at domain level and export their whole site’s ranking keywords (to clarify, I’m not going to be going into each product folder as I did with the training data):

https://www.superdry.com/
https://www.topman.com/
https://www.ralphlauren.co.uk/
https://www.burton.co.uk/

And I could keep going.

After I’ve deduped all the keywords on these sites and got rid of branded keywords I’m left with around 100k, uncategorized keywords.

I may also employ some standard keyword research techniques such as using merge words and keyword planner or Ahrefs keyword explorer to get even more keyword suggestions. The beauty is, we don’t have to spend ages making sure the keywords we are exporting are being categorized correctly. We can literally just plug in domains and seed keywords and export.