Hi all

i would like to share how i fixed the issue with small customization.
In custom code override "point_of_sale.ProductsWidget" (file ref:odoo15/addons/point_of_sale/static/src/js/Screens/ProductScreen/ProductsWidget.js)

return list.sort(function (a, b) { return a.display_name.localeCompare(b.display_name) });
To
return list.sort(function (a, b) { return a.display_name.localeCompare(b.display_name, undefined, {numeric: true,sensitivity: 'base'}) });

This will make the product variant sequence fine in pos.