Happy to check!
Typically that would be for:
1. Not finding those titles/keywords at those businesses
2. Smaller businesses in smaller markets that don't have much coverage
3. Privacy restrictions in heavy industries
To fix this, you can use Claygent with the pre-made templates to find the CEO LinkedIn profile and update the prompt to mention finding the full name in the outputs. This will help bring you the most recent data that can be found on the web.
Send me the URL and I can see what's wrong in particular here!