The modern Major Scale for all keys is based on the Ionian Mode with an interval structure of T-T-S-T-T-T-S
The modern natural Minor Scale for all keys is based on the Aeolian Mode with an interval structure of T-S-T-T-S-T-T
The most usual 'modal' mode is Mixolydian with an interval structure of T-T-S-T-T-S-T
All modes can be played in any key by applying the interval structure of that mode from the starting note (tonic)
There are other modes, some of which are invented and are not included here. A common traditional mode (and one of the oldest) is the 'pentatonic' mode which only has 5 notes in the scale. The major Pentatonic scale starting on C is:
The Pentatonic Minor has intervals of [T+S]-T-T-[T+S]-T.
Other scales/modes are: