How to add Custom Doctype is in this list?

Hi,
Is there any way to add a custom doctype in this list.

Regards
Ruchin Sharma

Hi @ruchin78,
It’s not customizable, you’ll need to make changes to the core files.

Thanks @shreya115
:sleepy:
Any other way to do this, I mean can we do this via hooks or something?

Regards
Ruchin Sharma

Not possible as of now.