Here are a few selections to start with:

Epson High Quality Inkjet Paper (letter size #S041111) is a lightweight matte paper (90gsm/24lb) that looks and feels almost identical to plain bright white photocopy paper. It is coated for inkjet use on one side, and performs very well for high-resolution, high-contrast applications where you need the best quality at a minimum of weight and cost. Expect rich vibrant colors, and dark velvet blacks. A 100-sheet pack is under $10, making this an ideal choice for low-cost, color-accurate printing:

https://epson.com/For-Home/Paper/Presentation/High-Quality-Ink-Jet-Paper/m/S041111

Epson Presentation Paper Matte (letter size #S041062, tabloid size #S041070) is the newer version of this paper. It is slightly heavier (102gsm/27lb) and a bit pricier, but otherwise performs similarly.

https://www.amazon.com/Epson-Presentation-Paper-Matte-S041062

https://www.amazon.com/Epson-S041062-Matte-Presentation-Sheets/dp/B00004TS2L

Increasing in weight, there is also Epson Premium Presentation Paper Matte (47lb), and Epson Ultra Premium Presentation Paper Matte which can be used with both dye and pigment inks, but the weight is only 51lb:

https://epson.com/For-Work/Paper/Presentation/Ultra-Premium-Presentation-Paper-Matte/m/S041341

For heavy weight papers, you might try Red River. They have several selections in the 65+lb range which more closely matches the weight of the watercolor paper you posted. These papers will require some experimentation to determine if they will work with your printer. You may want to reach out to Red River directly and ask for a recommendation before ordering.

https://www.redrivercatalog.com/browse/matte-photo-inkjet-paper.html