The are stats on statbunker.
It appears to show that Jimmy's percentages are getting worse over the last few years
And Jacobs are getting better year on year and is at 80% for this season and from memory has a higher percentage than Jimmy
I do love a few stats and while they don't tell the full story they can be quite interesting and challenging to perceptions.
19/20
Jimmy - 54/61 - 88.25% (joint 2nd highest % from those who had taken 20+ kicks)
Jacob - 20/28 - 71.43% (16th)
20/21
Jimmy - 27/33 - 81.82% (5th)
Jacob - 39/49 - 79.59% (8th)
*Sopoaga actually 1st with 90% (18/20)
21/22
Jimmy - 25/33 - 75.76% (11th)
Jacob - 16/21 - 76.19% (joint 10th)
Only time Ryan Mills appears in the 2016/17 season when he was Worcester's primary kicker with 40/56 - 71.43%
Currently Jacob has better place kicking percentages for the season than Marcus Smith and Paddy Jackson and is only just below Ford and Joe Simmonds - in no way an outlier of poor kicking.
Charlie Atkinson isn't a poor kicker either - he hasn't had much of a chance at '1st class' level due to routinely playing with Gopperth and/or Umaga so maybe cannot be judged under pressure but I don't see a reason to prioritise signing a 12 or 15 just primarily because they are a good place kicker (esp as I can't think of many who would fit that criteria).