Best way to model different options in EF Core

public class myclass {
    public string MyParam1 { get; set; }
    public string MyParam2 { get; set; }
    public string MyParam3 { get; set; }

    // Integration A
    public Guid PackageId { get; set; }
    public Guid LocationId { get; set; }
    public Guid ScreenElementId { get; set; }
    // Integration B
    public Guid PackageId { get; set; }
    public Guid LocationId { get; set; }
    public Guid ScreenElementId { get; set; }
    // etc
}

public class myclass {
    public string MyParam1 { get; set; }
    public string MyParam2 { get; set; }
    public string MyParam3 { get; set; }

    // Integration
    public IntegrationType Integration { get; set; } // A,B,C,etc
    public Guid IntegrationId { get; set; } // But wouldn't this just then be a table with all references, like in the previous example?
}