Hi Frank,
it looks like you've done some great research there!
Whilst I don't think you need to do more research you could consider using market growth data, that looks at recent sales, such as:
1. https://landregistry.data.gov.uk/app/ppd
2. https://www.zoopla.co.uk/house-prices/ls1/
3. https://www.rightmove.co.uk/house-prices/ls1.html?country=england&referrer=landingPage&searchLocation=LS1
However, in terms of fundamentals - as favoured by Rob & Rob - what are public transport links like? For example, I know only some of those postcodes will include a train station. But - no doubt - one of the projects the new Mayor of West Yorkshire will want to quickly progress is the much talked about Leeds tram system. So, if you are looking to hold and seeking strong capital growth you may want to target likely tram locations.
All the best,
Damian