OK so I think some progress...
Schar are on the Orbat chart attached by Gunter... the Marburg Archive document.
If so, then it ID's the 6 Danish battalions - Christian(listed Cretien), George, Frederick (listed Friedric), Sjaellandske (listed Seeland), Funen (listed Finlandois) and Jutland (listed Schar).
No sign of Guards. If they were at Aughrim I couldn't find the mention in McNally. If so then that makes 7 Danish battalions at the battle not 6 UNLESS one of the other six listed was NOT there.
The Marburg sketch also identifies:
Treloani(Trelawney) who I cannot find on any other material
Pridehofe or Pridehose (possibly a colonel's name but not English) - A foot regiment
Wolstai (another foot regiment)
Lord..... (no name) a regiment of Horse
Nassau.. a regiment of Horse
Two separate regiments Babington & Darmstadt (who are in fact the same regiment)
It shows Regiment Ginkel as having 4 squadrons and Lauigni (Rouvigny?) as having 3 squadrons.
It also lists 3 battalions of Foot ALL called Hamilton. This could be Lord George, Gustavus Hamiton but who is the third as McNally suggests Gustavus's battlaion were in fact commanded by Creighton on the day. We have an extra Hamilton!
To me these are the anomalies as all of the rest of the regimental references tie up more or less although there is some confusion over:
Lloyd's Regiment who Sapherson has guarding the trayne and McNally has on the field.
Dutch Life Guards who appear neither in Marburg or Sapherson but do in McNally.
Brandenburg who do not appear in McNally's orbat but do feature in his battle narrative. They do also appear in Marburg but not Sapherson
Riedesel who appear in both Sapherson and Marburg but not mcNally. Steenbeck(van Reede) appear in McNally but neither of the other two.
It is definitely like a jigsaw puzzle