Hello,
When using addList, all paragraphs use the same paragraph style. You can style the added text using dynamic styles properties available in addText or using a list style.
We also have a patch, that hasn't been released yet in the stable package, to allow to use pStyle in addText within addList. After you have purchased a license please write to contact[at]phpdocx.com and we'll send you the patch.
Regards.