There are websites (totalLondon or others) that show all the commuter stations that go into different Londonnstations with times, price of season ticket, price of typical house.
Every year, usually in Jan there numerous articles about best value commuter place, cheapest, fastest journey, best ratio of house price to length of journey etc. Just google these to get an idea.
Key things to consider are if you want LOndon suburbs (ie Zone 5/6 within M25) which has a difffernt feel, to commuter towns outside M25. Sometimes price of season ticket can be quite different but not always, and likewise, journey time can differ a lot.
Popular pleases for commuting into Waterloo from within M25 seem to be Surbiton, Esther, Weybridge.
If you go outside M25 there are places like Redhill, Dorking, Oxted which all go into LOndon Bridge and/or Victoria, with fastest trains being just over 30 mins.
You can go a bit further out into the Home Counties such as Guildford, Winchester but journebtines and price of commute grows. House prices don’t necessarily fall.
If you’re a regular commuter, being near a station (walking distance) could be important, but will have a premium price.
Look at schools too….do careful research as often these places have some great schools …but tight catchment areas and often no catchment area, but a reducing area drawn from each year.
I’d start by thinking whether it’s suburbia and within M25, just outside it in the market towns which oerhaos gave 30-40 min commutes, or further into the depths of the Home Counties.