Hi, yes they're Tagetes, going off their height, I would say African group, African marigold, the African ones are usually taller than the French, or Afro-French, or Signet marigolds, they could be from mixed seed, or could be 2 different species, the more orange 1 could be Jubilee series, and themore yellow1 could be Gold coin series , both are African marigolds, botanical name Tagetes, Derek.

They look like French marigolds to me....lots of different varieties, maybe yours is called Boy o boy mixed

I would agree with Derek that they are African Marigolds (Tagetes erecta), the clue is in the name. French marigolds Tagetes petula) are usually grown in borders or small pots because they are lower growers.

The give away is that they're growing in front of Cineraria maritima (The silver plant)....which gets to 15" high. The marigolds are half that size.

thanks everyone :)