For me the question usually is which focal length do I prefer, then AF or MF, and only after that which specific lens. It also depends if I‘m looking for a modern look or a softer one, and b/w or color.
Personally I find everything over 90mm flattens out the image too much, so I prefer something in the range 50mm to 80mm.
On the MF side, the 50mm f/1.2 AIS is lovely as Niroplait mentioned above (very soft snd painterly at 1.2 and sharp from f/2 up)
The Zeiss ZF 50mm f/1.4 is also special.
The Zeiss ZF 50mm f/2 is very sharp and high contrast if you prefer that look.
I find the 85mm AIS lenses solid but nothing exciting.
The Zeiss ZF 85 f/1.4 has a bit more bite.
The 105mm f/2.5 is great but too long for me.
On the AF side, the interesting ones are the 85mm f/1.4 AF-D and 105mm f/2 DC, but i find them somewhat fuzzy wide open and expensive.
The 50mm f1/4 AF-D and all the G lenses are ok but again not very special.
The Sigma Art 50mm and 85mm f/1.4 are great if you are looking for clean and modern rendering.
All that said, those are minor differences and lighting and environment will have much greater impact - as will switching to medium format, which I much prefer for portraits.
Afaik there is no 80mm f/2 from Nikon.