Sullview - You should take the time to track down those custom content credits before you post. Sometimes the creators will have explicitly asked that you not upload their content in your lots. You will have to read the text with each item to find out if it's okay to include it, or if you are supposed to not include it, but give a link to the item so that your downloaders can get it for themselves. It's important to pay attention to these details.
Also, you will want to get a copy of the
Clean Installer to make sure your lot does not include items that you are not authorized to include in your upload. Sometimes the game packages items with your lot that you are not actually using, so you'll need to check that to make sure it hasn't.
Also, I noticed that you have included a copy of the InSimenator in your package. I'm sure you didn't do it intentionally, but that is also very much against the rules.

From
this thread:
VERY IMPORTANTMake sure to credit for any custom content used if you are uploading a
Sim or a Residential or Community Lot.
Make sure not to upload anything from a pay site or in violation of the
policies of free sites! Doing this will get you banned from
InSIMenator.net.
Try to provide links to their web sites as necessary and you are able -
this is a normal part of giving credit to artists.