[JayGalt]

We make those; they are called Corzetti.
There two sellers on Etsy who make the stamps.
FlorentineTouch
example: https://www.etsy.com/listing/604420416/bee-corzetti-pasta-stamp-handturned?ref=yr_purchases

TheWoodGrainGallery
example: https://www.etsy.com/listing/768926476/star-flower-corzetti-pasta-stamp?ref=yr_purchases

[mylife]

They look very simple to me.
Knead it, roll it, cut it, stamp it.

[JayGalt]

Shop links, a better way to see all the stamps
https://www.etsy.com/shop/FlorentineTouch?ref=simple-shop-header-name&listing_id=604420416

https://www.etsy.com/shop/TheWoodGrainGallery?ref=simple-shop-header-name&listing_id=768926476&section_id=18913095