@typeparam MyType
<SomeHtml />
@code
{
[Parameter]
public List<MyType> MyList{ get; set; }
}
<MyComponent MyType="MyTypeABC" MyList="@MyData.MyList" />
References
https://blazor-university.com/templating-components-with-renderfragements/using-typeparam-to-create-generic-components/
https://stackoverflow.com/questions/60393496/c-sharp-blazor-how-to-use-typeparam-in-code-behind-with-workaround