I have a similar one with slightly different output, however mine appends the top N stashes as well for additional context.

  # Branches
  2022-08-11 13:26:34 -0700 4 days ago    branch-1
  2022-07-13 07:49:36 -0700 5 weeks ago   branch-10
  2022-06-28 23:40:53 +0000 7 weeks ago   branch-8
  2022-06-28 22:47:31 +0000 7 weeks ago   main
  2022-06-28 19:24:10 +0000 7 weeks ago   branch-7
  # Stashes
  stash@{0}:Thu Aug 11 13:17:11 2022 -0700 WIP on branch-3: afa19e7444a Some changes based on morning sync
  stash@{1}:Tue Jul 26 13:25:37 2022 -0700 WIP on branch-5: bd6122e2dfa find() bugfix
  stash@{2}:Tue Jul 12 15:05:31 2022 -0700 WIP on branch-7: 1221d0640c5 linter

Code:

  recent() 
  { 
      echo -e "${PURPLE}# Branches${COLOR_END}";
      for k in $(git branch | perl -pe 's/^..(.*?)( ->.*)?$/\1/');
      do
          echo -e $(git show --pretty=format:"%Cgreen%ci %Cblue%cr%Creset " $k -- | head -n 1)\\\t$k;
      done | sort -r | head;
      _num_stashes=$(git stash list | wc -l | while read l; do echo "$l - 1"; done | bc);
      echo -e "${PURPLE}# Stashes${COLOR_END}";
      for i in $(seq 0 ${_num_stashes});
      do
          echo -en "${CYAN}stash@{${i}}:${GREEN}" && git show --format="%ad%Creset %s" stash@{$i} | head -n 1;
      done
  }