Bismark. See if you can get your hands on a copy of Concords "German Armoured Units at Arnhem' . It is a fantastic book with loads of pics and colour plates.
As to your intial question:
Schwere Panzer Kompanie Hummel had 16 Tiger 1's: all early pattern hull with rear hull smoke dischargers and filter equipment removed. Interim series turrets with modified Cupola's.
Schwere Panzer Abteilung 506 had 28 Tiger 2's and were present at Oosterbeek and Elst, but were pretty useless there in the confined areas. All had zim.
The 9th SS had :
SS panzer AA 9: 10 SdKfz 234/3, 15 sdkfz 251/9 (stummel late type), 12 sdkfz 250/1(mix of ALT and NEU) and 3 sdkfz 251/1ausf D
ss-pz jg abt 9: 2 Jagdpanzer IV's
SS Pz Flak ABT 9: 6 late version mobelwagon's and one SdKfz 10/2 (Demag D7)
SS Pz pio abt 9: 2 sdkfz 251 ausf d pioneer vehicles.
10 SS panzer Division had:
I/ SS Panzer Rgmt 10: 8 Panther Ausf G (early)
II/ SS Panzer Rgmt 10: 12 Panzer IV (mix of Ausf G and ausf H) and 3 Stug 3
ss-pz AA 10: number of sdkfz 250 and 251 and at least one pz Spwg P204 (Panhard armoured car)
SS Pz Flak ABT 10: at least 3 Sdkfz 7/1 (quad 20mm)
Sturmgeschutz Brigade 280 had:
7 Stug 3 Ausf G late (saukopf) mantlet all with raked zim. Rumour of early Ausf G's but no pics.
3 STuh 42 G late (these had no muzzle Break) with waffle pattern Zim.
Panzer company Meilke operated between Arnhem and Elst and had 1 Panzer 4 ausf H and 1 Ausf G, as well as 4 Panzer 3 ausf M's and 2 Ausf G's
Panzer Kompanie 244 "Gruppe Fuhrer" had:
1 PzKpfw 35S (f) (French Somoua)
2 PzKpfw B2 (f) (French Char B1and B2)
13 Flakpanzer B2 (Char B2 with 7.5 cm gun replaced by flamethrower)