How about WY Train Day Rover (£6.60) and SY Day Tripper (£6.30).
ONLY valid on Northern on cross boundary journeys I.e. Not on XC or EC.
WY ticket can be purchased from train conductor (but not if you join at a staffed station), so OK from Normanton. But SY ticket is not available from train conductor, only bus drives and staffed stations.
Pontefract stations (Monkhill) any permitted CDR (off peak day return) is £10.30. I haven't checked routing guide but should be valid Grand Central to Doncaster, Mexborough to Sheffield. And return Sheffield to Wakefield and Pontefract Monkhill. You would need to get to Ponti of course!
Normanton to Sheffield CDR is £9.30. This is probably not valid via Doncaster, but to get to Mexborough travel Normanton, Wakefield Kirkgate, Swinton. Then buy ticket from booking office Swinton to Mexborough (£2.60 CDR) or Doncaster (£4.00). Obviously Sheffield ticket is valid to return on direct train via Barnsley to normanton