You can take natural fibres and good solid yarns from these fibres:
hemp, nettle, linen.
Also you can use Dacron (B50 and B55). It is a polyester yarn.
The modern yarns are mostly different versions of Dyneema from the company DSM Dyneema (SK 60 - SK 90) with the examples
Sk65 = FF;
SK75 = D97, D75, FF+, 8125;
SK78= Force 10, Astro Flight;
SK 90 = Fury, 8190.
There are also hybrid yarns from Dyneema and Vectran (ex. 452x, xcel)
The difference is usually the make-up of the yarn (thickness, number of fibres, how much pre-waxed).
Personally I prefer Spectra 652, which is comparable to SK65 but comes from a different yarn manufacturer (Honeywell) and I only wax where I build the loops.