Theme in library for architect firm

Hi there,

Theme which can be used to add YouTube videos

You can add YouTube videos to any of the site library templates with the core YouTube block:
https://wordpress.org/support/article/youtube-embed/

used for architect firm

Perhaps Mason would work: https://gpsites.co/mason/

All of our site library templates are multi-purpose - it means that if you switch out the images and text so that they are architectural related then it would be an architectural site.