Guards Armoured Brigade was a standard Sherman equipped brigade, three armoured regiments with three sabre squadrons (Sherman 75s, and fireflies), a recce troop (Stuarts) and Regt HQ, plus a motorised infantry battalion (1st Bn, Grenadier Guards).
No Cromwells anywhere except the divisional armoured recce regiment (2nd Bn, Welsh Guards).
The Divison generally fought in late 1944 outside of the OOB with two square brigades, each with two groups of two paired tank and infantry battalions and supported by one of the field artillery regiments.
By this stage of the war, the mix of Shermans and Fireflies in the sabre squadrons was a bit variable, with some troops having two fireflies instead of just one. I can't remember if they'd reverted to five troops of three tanks by September or still had the old Normandy organisation of four troops of four. I suspect it was still troops of four, as Lord Carringtons troop crossed Nijmegen bridge with four tanks.
The regimental Recce troop had 11 Stuarts (two HQ and three sections of three).