It is a mixed bunch. Probably no way of knowing if they met and mixed together on the road or what? These people just look happy to be surrendering to anyone other than Russians.
I suspect the vehicles containing a mix of SS and non-SS men may be due to their being part of the same ad-hoc unit. Towards the end, defensive lines would be formed with one SS man separated by 4 or 5 men from other units and the men from the other units taking their lead from the SS man.
At 2:23 there is a staff car PD-3865 with some men in mufti that don't quite look the part of medics. I'm sure they received "special attention". At 2:49 an SS officer in a staff car talks to an American officer. At about 2:51 there is a partial tag on the right front of the halftrack. At 3:25 there is a Wolfsangle rune (2nd SS Division Das Reich?) on the left rear of the halftrack above an insignia that is the same as the left rear of the halftrack at 3:28.
The German 7th Army consisted of the 2d Panzer Division and various odds and ends including some school troops. They surrendered about this time, so this could be them.