The first are both Hydrangea paniculatas but it is tricky to ID a specific cultivar at this time of the season. They do not look like Strawberry Sundae to me, which is usually very early to develop its pink coloration.

The second and third photos are of a type of smooth hydrangea, H. arborescens, maybe Invincibelle Spirit or Invincibelle Blush. These often will be floppy, especially in early years as the weight of the huge flowerheads bend the stems down.

I agree. The first two have smaller foliage and the blooms are panicle shaped so they would be a paniculata (Strawberry Sundae). SS will bloom white then pink then magenta and then brown. The foliage of the other picture look like one of the somewhat new smooth hydrangeas Invincibelle Series (which includes varieties Ruby, Mini-Mauvette, Spirit, Spirit 2 and Garnetta), Incredibelle Series (which includes Blush... although the shade of pink of this one is slightly more lighter than in the picture); or Bella Anna (not sold much nowadays but it was a while back ago).

The smooth hydrangeas tend to have blooms that are too heavy for their blooms and will flop by the end of the season... specially while they are new. As time goes on, the stems become woody (sandy/gray/brown in color) and can hold up the blooms better. I use those small 2-3' high green wire fences around the plants to help prop the blooms. The plants typically cover the fences if they start being fenced by Spring. You can also cut off the blooms now if you want so they do not look so bad and catch dirt and fungus from the top soil.

Ok on 1st picture regardless of what they are would prune the lower and start to shape ... on pink I would do the same