Tray of plants from seed

In November, I took photos of my plant trays.

I have called this Tray 1.





What's in it?
Front Row (L-R): Mammillaria albilanata, Mammillaria longimamma, Astrophytum hybrid, Echinofossulocactus ochoterenaus.

2nd Row (L-R): Mammillaria sp, Mammillaria magnimamma, Acanthocalycium spiniflorum, Notocactus horstii purpureus.

Back Row (L-R): Ferocactus gracilis 'coloratus', Mammillaria sp, Mammillaria dixanthocentron, Mammillaria albilanata.