Phyllotaxis Spiral

[scutari.anam (grasshoppe)]

Hi all, I am currently working on a phyllotaxis script and I would like to obtain various patterns based on the values of the points, such as selecting the odd/even/prime/squares (or other criteria) numbers and creating a circle around the selected values; or sizing the circles according to their item number, however I am not quite sure how to achieve this. I have the basic script for the phyllotaxis spiral. Attached are photographs of the patterns I am working to achieve. Thank you in advance!