Neve, Hestia, Shopisle, Zelle from https://themeisle.com are the four themes with many demos that would be good starting point for your business site using Elementor builder that will run fast and looks beautiful. FREE (value $99/year)
From auto login, social login, redirect after login, custom error message, limit login attempts, custom layout and many other awesome feature, Login Press got it all covered for customizing the WordPress login page. FREE (value $75/year)
In 2019, I have invested into some Elementor extensions that are lightweight and useful for the project, which includes Essential Adds-on ($199.97), Elementor Extras ($140.98) and Elementor Custom Skin PRO ($149). If you are using Elementor for your site, these licenses together with Elementor Pro would be configured FREE for your site.
Modula is awesome gallery tool that is great for showcasing portfolio work that requires high image resolution. This integrates nicely with Shortpixel. I will help integrating them so you will have site that is elegant looking and optimized for speed. FREE (value $99/year)
This theme was part of the breast cancer campaign that I joined, it was in the early phase of Genesis theme. That year was the year that I started using Genesis theme for building my website and some of my clients. FREE (value $499.95)