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.
[h=2]Features Overview[/h]

• Multiple Columns Choices: 2, 3, 4, 5 Columns Support
• Infinite Scrolling Support
• Multiple Media Types: Gallery, Video, Audio Support
• Fullscreen Portfolio Content Popup
• The Portfolio Grid and Detail Templates are Customize-Friendly
• Compatible With Elementor Free and Pro Version
• Language File Include
• Well Documented

Icon Credit: Created By Zach Bogart from Noun Project