how to check logic from all existing and future implementation of "ICheck" to get the right content type

I have a interface where I am returning result for a check and this interface has currently 2 implantations but in future it will keeps added.

public interface ICheck
{
    Task<CheckReturn> GetCheckReturn(string fileName);
}

public class ATypeCheck : ICheck
{
    public async Task<CheckReturn> GetCheckReturn(string fileName)
    {
        //logic to check A Type
        //return CheckReturn with right content type
        return await Task.FromResult<CheckReturn>(new CheckReturn { ContentType = "Type A" });
    }
}

public class BTypeCheck : ICheck
{
    public async Task<CheckReturn> GetCheckReturn(string fileName)
    {
        //logic to check A Type
        //return CheckReturn with right content type
        return await Task.FromResult<CheckReturn>(new CheckReturn { ContentType = "Type B" });
    }
}

// Future CTypeCheck
// Future DTypeCheck

With below code I am able to do only one check validation, but I need to check all the implementation of ICheck?

static async Task Main(string[] args)
    {
        ATypeCheck check = new ATypeCheck();

        var result = await check.GetCheckReturn("XYZ");
    }

Which design pattern help here & how?