Links first, heathland a close second. Location - north-south-etc - is important.
Most links, being coastal, are pretty much playable with good ground conditions 12-months p/a whereas heathlands, although essentially sandy, being inland, are often not - it’s more frequently frosty/snowy inland.
Links can be a pain though. Strong winds let alone very strong winds/gals can’t half bugger-up your technique, whereas being inland, heathland are generally less windy.
Both are well ahead of parklands though.
Other categories to consider could also include downland, upland and moorland.
Atb