Stylish Furniture for Every Home

I'm not sure these will fit residential doors but appear promising.

https://www.homebuildershardware.com/product/lawrence-mill-aluminum-automatic-door-bottom-lh7553/

https://www.tmhardware.com/Automatic-Door-Bottom-Mortised-for-Metal-Door-with-Choice-of-Seals.html

https://www.tmhardware.com/Automatic-Door-Bottom-Mortised-for-Metal-Door-with-Double-Neoprene-Seal-5-Drop.html

https://www.tmhardware.com/Automatic-Door-Bottom-For-Metal-Doors-Mortised-with-Neoprene-Seal-.5-Drop.html

https://www.tmhardware.com/For-Metal-Doors/?productId=361

https://www.amazon.com/New-Hardware-Pending-Adjustable-Exterior/dp/B07TFW5R2H

https://www.allaboutdoors.com/Products/Weatherstripping-Door-Window/Door-Bottoms-and-Sweeps

https://www.tmhardware.com/tmh-magnetic-kerf-weatherstripping-set-.4-magnetic-seal-for-1-8-kerf-frame-metal-doors-36-x-84.html

https://www.tmhardware.com/Kerf-Weatherstripping-.375-Magnetic-Seal-for-Metal-Doors.html

https://www.amazon.com/Endura-Composite-Exterior-Adjustable-Threshold/dp/B07TLZZ1VF

https://www.amazon.com/dp/B07TN3PZNB/ref=sspa_dk_detail_3?psc=1&pd_rd_i=B07TN3PZNB

https://diydoorstore.com/therma-tru-basic-composite-adjustable-sill-cap-30

https://www.enduraproducts.com/products/sills-sill-systems/z-series-adjustable-inswing-sill/

https://www.finehomebuilding.com/2013/05/06/z-articulating-cap-sill

https://www.enduraproducts.com/products/sills-sill-systems/z-articulating-cap-sill/

https://www.betterdoor.com/shop/sills-and-sill-systems/endura-z-articulating-cap-sill-and-sealing-system/

https://www.allaboutdoors.com/Products/door-parts/Door-Parts-Builder-Hardware/Door-Thresholds-Sills

https://www.amazon.com/Therma-Tru-Doors-Basic-Composite-Adjustable/dp/B09VVJL5JJ

https://www.tmhardware.com/Adjustable-Height-Threshold-All-Aluminum-Upper-1.125-H.-5.625-W.html