Thanks for writing in.
You can check about those plugins here https://theme.co/apex/forum/t/extension-essential-grid/68 and https://theme.co/apex/forum/t/extension-the-grid/74
Custom coded functionality is always faster, using existing plugins like these will, of course, add more load time but shouldn't be slower. If that's the case, you can optimize your site, like cache, or CDN to serve files externally. In the end, it doesn't matter the loading time differences due to optimization.
I'm not sure about the scheme data plugin, but maybe not. Both two are good, it depends on how you'll use it or your requirements. Personally, I prefer essential grid as I can do a lot of things. The "liking" is functional, it's not just part of the graphics. You may check their documentation for further information. https://theme-one.com/docs/the-grid/