Costumizable Stitching Software?

First of all, love that a group like this exists. Pioneering.

I currently work as a 360 videographer based in the Netherlands for the mental health sector and have been using the Insta Pro II and One X2 on the regular. Also the Insta software, Premiere and After Effects as I also work as a freelance editor.

I've noticed that I really want to find a good software that allows me to stitch manually in post for close ranged shoots. Even when I allign the lenses straight to the subject during shooting, I still get strange results in the stitcher and it's kind of a random factor it seems. This is pretty frustrating in a strict workflow.

I know Mistika, but am wondering if there are any alternatives?

Any tips? Thanks in advance!