Very nice dollars. The tigers seem adult and very colorful. I am sure they will be spectacular once fully settled in. I see the tiger with the red spot (last photo, center, second from bottom). That is called a humeral spot.
In tiger silver dollars, Metynnis fasciatus, there are 2 small humeral spots, a black one above the lateral line, and a long-shaped, red one red below the lateral line. Only males show the red spot (very rarely female and much fainter anyway). It does not mean that they want to breed; it simply means it is a mature male. But of course, their coloration changes with their mood and sexual activity, and gets turned on and off all the time. From what I see, all your other tigers are female (shape of anal fin), but can't quite see them all on their sides.
Regarding the other dollars, what you referred to was "regular", they look nice as well. They too will color up when happy. You have at least one male and one female, but again, the photos are not close enough and not on the sides so they can be seen well. More photos would allow assessing species and genders.
So about the plants. Anubias, Cryptocoryne, and something else floating. I guess those were already in the tank and the dollars were added a couple of days ago? It would be interesting to see whether they leave them alone or eat them. Both Anubias and Crypts (IMExperience), are plants that stand a chance of being left alone by the dollars. It would be nice. Good luck!