When the label
sus4 comes up things get tricky, because that label is from jazz/rock/pop which so often doesn't actually use the chord as a real suspension.
This is a traditional suspension...
...the first bar is a
G7 and the second bar is plain
C major, but notice the
F - the seventh of
G7 - is suspended (held over from
G7) in the first beat of the
C chord and then resolves down to the
E on the second beat.
The typical thing is for the
sus4 to happen on the plain triad after the dominant seventh.
This is not the only way a suspension gets handled, and sometimes the
sus4 chords are used without any resolution, but the example above is the traditional origin of suspensions.
Also, there is a particular harmonic sequence of seventh chord that may interest you. It isn't exactly what your question is about, because the suspension involves a seventh rather than a fourth. Here is an example...
...where the third of one chord is suspended to form a seventh in the next chord which then becomes the third of the next chord. Again, the suspensions are sevenths rather than fourths, but it is a common example showing suspensions used on all diatonic chords except the tonic.