Permeant tf is Guaranteed. Unsure about the others. I think I've seen variations of all of those. But not as... Massively as you want. But can't be too sure as I'm a weirdo with specific tastes. Sorry I can't be more help
Read the comments. The dev has specifically stated that permeant transformations are coming in the next 'few?' updates. Correct if wrong. It takes scrolling down and reading 3 comment posts under this one (talking about main comments. Not replys) and just by going off the in-game scenes and what not. There is definitely hints of some stuff in certain areas. But it's why I said I'm not sure
Oh. I see. Ok. My bad. I consider anything that lets you stay in one form indefinitely until something changes you as permeant. Ie. Changing into a bunny. And your like that until you specifically change it. That's coming. Permeant entrapment in a specific form. Idk. After all. The potions are the major point of this game so it makes sense that if you don't like your form anymore. Just drink a new one