High-level strokes are quite different given the valley of topspin vs slice, main commonality will be quick hands and reactions at the net and chiquitas will be helped by dinking.
If you want to use pickleball mostly as practice for padel, though, you can play one-handed backhand and continental grip on forehand and rely mostly on flattish drives with a little flicked topspin. In that case, I would say backcourt low play will transfer over quite well.
I think slicing (non-drop) volleys in pickleball would be too a bridge too far, but if you rely mostly on flat punched valleys rather than rolls and flicks, it will also carry over solidly. As a 5.0 tennis player volleys are my weakness, but as a 4.2 padel player, volleys are by far my strength (and they are still mostly tennis volleys, without much effort to slice).