I am not quite sure that I understand your question. Are you asking about which porn niche is best in terms of money? Please be more precise so I can give you an answer.
I have been saying this for a few years and it has not changed, webcams are the most profitable part of the adult industry and you should definitely consider building a website around them. You can start a blog on which you add posts about models, review different products, or open a tube with prerecorded videos from PornHub and others, you can also start an affiliate live site using the Robo script mentioned here: https://mradultaffiliate.com/adult-cam-site-with-wordpress/
You can also create a porn list page like ThePornDude but only for webcam offers or even small live niches, there are many possibilities and you can pick one and start from there.