Find a similar theme

Hi I would like to find a theme that is the same or similar to this website: https://www.bangkokwebdesignbasics.com/

an important feature to me is the portfolio page: https://www.bangkokwebdesignbasics.com/websites/

particularly, the grid option which when clicked on leads to a slideshow.
Any themes you could recommend to achieve a design similar to this one would be appreciated, thank you