Oxygen is a site builder for WordPress.org (self-hosted WordPress sites) and was actually used to build this website. It works somewhat like a page builder but enables you to spin up entire sites without ever using a theme. There's definitely a learning curve but it may save you time and effort in the long run.
Oxygen is a paid-for product (with no free 'lite' version), sold under a lifetime unlimited licence. It competes in the page and site builder marketplace against Elementor, Beaver and Divi.