The Hoover Floormate Deluxe FH40160 and FH40160PC are the same, the “PC” stands for “Plain Carton”.
Hoover Floormate FH40150 vs FH40160PC
images from manufacturer

The difference between Floormate FH40150 and Floormate Deluxe FH40160 are as follows.

1, The FH40150 comes with only 1 brush – SpinScrub Multi-Floor Brush (assembled in unit) whereas the Deluxe FH40160 series include 2 brushes – a SpinScrub Wood Floor Brush (assembled in unit) and a SpinScrub Tile & Grout Brush. Brushes for wood floor is softer than the tile brushes.
The FH40163 comes with a SpinScrub Multi-Floor Brush.
(Included brush may change, please make sure what are included before buying.)

2, The Deluxe FH40160 series have 2X tank capacity.
The FH40150 has 0.75 quarts clean water capacity and 0.75 quarts dirty water capacity whereas the Deluxe FH40160 series and Professional series FH40163 have 1.5 quarts clean water capacity and 1.5 quarts dirty water capacity.

3, Color Scheme.
The FH40150 primary colors are blue and silver whereas the Deluxe FH40160 series and professional series are silver.

4, Cord Length
The FH40150 has a 20-foot cord, the Deluxe FH40160 series have a 20-foot cord whereas the Professional FH40163 has a 25-foot cord.

5, Performance
According to user reviews, the Hoover FH40163 Professional Series Deluxe sprays more cleaning mix for better scrubbing and extracts better.

Other than that, they are functionally the same.
They both have wash/dry mode selection, 2 tanks – one for clean water and one for dirty water, 3.5 amps motor, no edge cleaning brush, removable 11.5″ nozzle and brushes, weighs under 14 pounds, come with 16 oz Multi-Floor Plus 2X cleaning detergent, and backed by 2 year limited warranty.

You can learn more details by downloading manual from hoover.com, here is the page link to hoover product manual:
https://hoover.com/pages/product-manuals