I don't know much about Cumbria but it's interesting that until recently only one stone row was believed to exist in Cornwall (Nine Maidens) until 8 others were 'found' on Bodmin Moor. The Bodmin Moor ones are all of small and unimposing stones and range from 12 to 560 metres long, whereas the Nine Maidens is a short row of large stones, with a probable outlier (the Magi Stone - and known by many other names) 500 metres away. Lots of rows have also been 'found' on Dartmoor - about 70 or so.

What I'm trying to say it that new things are still being discovered in one part of the country, and there isn't as such a thing called 'the typical Cornish stone row' (although evidence so far suggests the Bodmin ones are probably typical of the Bodmin area) so who knows if other parts of the country share this.........