What's the difference between the two?
Later the doctors found out that my case was a bit different.
Later on the doctors found out that my case was a bit different.
Is one more common than the other?
What's the difference between the two?
Later the doctors found out that my case was a bit different.
Later on the doctors found out that my case was a bit different.
Is one more common than the other?
"later" and "later on" have the same meaning. Sometimes "later on" is preferred because it has another, smoother rhythmical flow. You can consider "later on" as just a variant for "later".
According to me the "on" is just a filler to make the sentence smoother.
For Example- Many times we use "in order to", even though "to" is sufficient.