The active products area displays the current products in your store. You can select any by SKU and edit content as needed.
Products in the Needs Review listing are products that should be reviewed for possible inclusion in your store. They are filtered into this area as feeds are fetched and compared with any exclusion rules that are set.
Excluded products are those that have been ignored by data feed rules that have been set up.
Products with no supplier no longer appear on data feeds but are available for purchase in your store.