Umbraco v9 RenderMvcController replacement options

HomePageController.cs

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.ViewEngines;

using Microsoft.Extensions.Logging;

using Umbraco.Cms.Core.Models;
using Umbraco.Cms.Core.Web;
using Umbraco.Cms.Web.Common.Controllers;
using Umbraco.Cms.Web.Common.PublishedModels;

public class HomePageController : RenderController
{
    public HomePageController(ILogger<RenderController> logger, ICompositeViewEngine compositeViewEngine, IUmbracoContextAccessor umbracoContextAccessor)
        : base(logger, compositeViewEngine, umbracoContextAccessor)
    {
    }

    /// <summary>
    /// Overrides RenderControllers default action.
    /// The Current content is accessible via CurrentPage as IPublishContent
    /// </summary>
    /// <returns></returns>
    public override IActionResult Index()
    {
        return CurrentTemplate(CurrentPage);
    }

    /// <summary>
    /// This action is used when the template name matches the method name.
    /// /// The Current content is accessible via CurrentPage as IPublishContent
    /// </summary>
    /// <returns></returns>
    public IActionResult HomePage2()
    {
        return CurrentTemplate(CurrentPage);
    }

    /// <summary>
    /// This action is used when the template name matches the method name.
    /// </summary>
    /// <param name="model">Provides access to the current content using model.Content as IPublishContent</param>
    /// <returns></returns>
    public IActionResult HomePage3(ContentModel model)
    {
        return CurrentTemplate(model);
    }

    /// <summary>
    /// This action is used when the template name matches the method name.
    /// </summary>
    /// <param name="model">Provides access to the current content using model.Content as the strongly typed model Homepage</param>
    /// <returns></returns>
    public IActionResult HomePage(ContentModel<Homepage> model)
    {
        return CurrentTemplate(model);
    }
    
    /// <summary>
    /// This action is used when the template name matches the method name.
    /// </summary>
    /// <param name="model">Provides access to the current content as the strongly typed model Homepage</param>
    /// <returns></returns>
    public IActionResult HomePage(Homepage model) //credit to https://github.com/bakersbakebread for finding this one.
    {    
        return CurrentTemplate(model);
    }
}