Form for song
Autumn Leaves is usually AAB. This means you play the A Section 2x, then play the B Section.
Using the Pinky as a guide finger
All these chords have the 4th finger, the pinky finger on the B string, the 2nd string. That means you can keep the pinky sliding on the 2nd string as an anchor when you change chords.
F Major 7 and F Major 7/6
You can use either chord form, just choose the whichever is easier for that part of the song. The F Major 7 is on the 8th fret and is the same chord form as the C Major 7, the F Major 7/6 is on the 1st fret.
E7 and E7b9
You can use either chord form, just choose the whichever is easier for that part of the song. They’re the same, just the E7b9, has an extra note on the 3rd fret of the D string.
Dmin7 and Dmin9
You can use any of these three