Finding a theme and don't know its category

Hi
I am new to this forum, I need a theme just like this site
https://www.cgtrader.com
I know it is a custom coding but i think there will be themes just like this for wordpress and also i do not know what genre/category or type of this theme is so i can search for it.

Please can anybody help me know what type of this theme is or just find me a wordpress theme like this.

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