ProductSearchFacetDisplayType reference
This article provides reference material about ProductSearchFacetDisplayType enum.

This enum describes the built-in facet presentations available through the product search extension API. Add-ons can register additional presentations for the storefront using ProductListFacetDisplayExtension and ProductRangeFacetDisplayExtension. See Custom facet presentations guide.
Values
List
Facet values are displayed as list.
SearchList
Facet values are displayed as list with search input.
RangeInput
Facet values are displayed as range input.