Quite an obvious one too, though people are still saying Priestap wrote it.
I prefer to believe my lying eyes.
It’s interesting that the signed note is clearly cursive, while the annotations are printed in mixed case with a few words in cursive—mostly the circled ones. The red lasso is awkwardly drawn as it obscures the lower ‘we.’ Possibly the annotations were written in a style to try and mask Obama’s normal hand-writing style.
What may also yield dividends is something like a speech or a press release (or several) that we know Obama has marked up to compare against the annotations in the Flynn documents. That might reveal more similarities.
How punctuation is used is also important. Check out the position and stroke of the periods and commas relative to the letters they appear after. They look similar to me.
Looks like a felt tip or or ball point pen with a good, even flow of ink was used in the personal note. A cheap pen or perhaps a pencil may have been used in the referenced annotations.
I’d also like to see other verified note-taking samples of E. W. Priestap’s handwriting to compare with as well. While I do see similarities between the two documents, I’d need to see more of their writing to be sure.