I agree with the others, unless you are using an older version of Photoshop that has the Picture Package plug-in your best bet is making a template for each package. However I would use smart objects when creating the template. That way you can create a new package from the template by just replacing the contents of any one of the smart object. The others will update automatically.
You can script the smart object replacement and make packages for a folder of image very quickly.
Even if I had access to the Picture Package plug-in I would still use a smart object template. I think it does a better job if the sizes in the package are not the same aspect ratio.