Some super long hairs I am aware of and I own (all of these come with adjustable length and have adjustment morphs to fit onto different figures--note they are all originally were made to fit Victoria4)

https://www.renderosity.com/marketplace/products/114587/sav-hydra-hair

https://www.renderosity.com/marketplace/products/102152/sav-semiramis-hair

https://www.renderosity.com/marketplace/products/95024/sav-dragon-lady-hair

https://www.renderosity.com/marketplace/products/83419/nykta-hair