Tiny Portfolio Addon plugin offers a Portfolio Grid Widget for Elementor page builder. You can create a portfolio grid with detail content popup, no need to use the portfolio post type, small but cool.
Demo https://codecanyon.net/item/tiny-portfolio-widget-for-elementor/25366456
Downloadhttps://www.filecad.com/inK2/Tiny-Portfolio-Widget-For-Elementor-v1.0.0.rar