The first bridleway (through the farm) is probably the easiest. The legal line of the BW goes straight up the slope for the first 200m or so but it’s better to follow the wall to the left and then cut back right on the obvious track. It’s then a steady if long grind to the col between Winder and Arant Haw.
The second bridleway heads up a rough track from the high point of the road before breaking out on to the fell. The initial track getting to the fell gate is the hardest part as it’s slightly loose and what isn’t loose is large stones sticking out of the ground. The track is then technically easy but has some steep bits that if it’s at all damp will have you spinning, I think I walked about 50 metres in total. The line on the map cuts to the west of Winder but on the ground the track goes to the summit. You’ve then a grassy blast down to the col.
The other two are better as descents.
The last bit of the climb up to Calders (as shown in the shots above) is the only bit I need to walk. It’s a bit loose for my skill level when climbing.