My favourite chain types are rolo:
and flat curb:
I hate chains that are prone to tangling, twisting, getting caught in hair or are fussy. I normally wear chains as is, without pendants for work, and with pendants privately.
Recently I have been wearing paperclip and bead chain bracelets and necklaces. I have them in different thicknesses but all are light and gold-plated sterling silver. The prettiest ones are the paperclip ones I think. They are very light and delicate.
These came from Orsas on AliExpress. The approximate price was $16 per chain and I have bought them over time.