Sin UW/FoW Speedclear Groups?

Hey guys ive recently noticed alot of sins in ToA but i really dont know what build they are using, and no one is willing to show me so i was wondering if someone can tell me what build does a sin run in these places and it would be great if someone could post the link to a guide for that role or something, i think the sin is called a velve or vale sin, thanks for the help

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Speed clear groups abuse the ability of shadowform to be basically immune to everything. This allows characters using shadowform to essentially clear, get and complete quests safely and quickly. Since they can solo the quests, the entire quest chains should be completed in about 30mins. Hence speed clear.

I only know the UW speed clear, but:
A/Me is used for chamber
A/N To tank in vale
A/D as an option for pits.

A/E is a solo build designed to farm the chaos planes.

Hope this helps.