You kind of have to be there watching the shooter to be able to read a target with any degree of certainty.
One of the things we always tried to emphasize in our instructor courses is that 'shooting occurs at the shooter, not the target.' IMO, there are way too many folks who tend to watch targets and call shots instead of getting in a position to watch shooter mechanics.
Targets are best used to verify what the instructor/coach saw on the line.
Having blah blahed enough, if I had to say something, the second target looks like you are increasing pressure down the grip as you press the trigger, commonly referred to as milking.
The remaining targets seem to be indicative of jerk.pip.
Those were shot at 7 yards. Blow those groups up to their 25 yard size following the trends exhibited and it would become much more noticeable.