Cmaj7

Cmaj7 is built with C E G B, the 1st, 3rd, 5th, and 7th notes of the C Major scale

C7 is built with C E G Bb, the 1st, 3rd, 5th, and b7th notes of the C Major scale

C7sus

C7sus is built with C F G B, the 1st, 4th, 5th, and b7th notes of the C Major scale

Cmin7 is built with C Eb G Bb, the 1st, b3rd, 5th, and b7th notes of the C Major scale

Cmin7b5 (C half-diminished seventh) is built with C Eb Gb Bb, the 1st, b3rd, b5th, and b7th notes of the C Major scale

Cdim7 is built with C Eb Gb A, the 1st, b3rd, b5th, and bb7th notes of the C Major scale