It seems the Mouser links in the doc have changed.
1P8T: https://www.mouser.com/ProductDetail/Alpha-Taiwan/SR1712F-0108-20F0A-N9-N-027?qs=%2fha2pyFadujnDTl3ZJPrT47%2fXDzyW0YSZfqiLV4Qc7I%3d (https://www.mouser.com/ProductDetail/Alpha-Taiwan/SR1712F-0108-20F0A-N9-N-027?qs=%2fha2pyFadujnDTl3ZJPrT47%2fXDzyW0YSZfqiLV4Qc7I%3d)
2P4T: https://www.mouser.com/ProductDetail/Alpha-Taiwan/SR1712F-0204-20F0A-N9-N-027?qs=%2fha2pyFaduhcoRt%252bBD03V%252bNqlrgc%252b%2fd6HNoZo2EmUS6M1ji6Ykm%2fIw%3d%3d (https://www.mouser.com/ProductDetail/Alpha-Taiwan/SR1712F-0204-20F0A-N9-N-027?qs=%2fha2pyFaduhcoRt%252bBD03V%252bNqlrgc%252b%2fd6HNoZo2EmUS6M1ji6Ykm%2fIw%3d%3d)
If you google "Rotataries", weirdly this is actually a thing for rotary engine petrolheads.
These switches seem to flit in and out of stock at Mouser whenever I want some.