Crimson Moon's Semblance is the closest fit on the game's own numbers: Hu Tao's kit multiplies HP, and a weapon is ranked here on whether its ascension stat and its passive act on that stat. Staff of Homa, Blackcliff Pole and Bloodsoaked Ruins come next. No playtested ranking has been imported for Hu Tao, so this is arithmetic over the kit data rather than a damage measurement.
Run Crimson Witch of Flames on Hu Tao, with Tenacity of the Millelith and Vourukasha's Glow behind it. Main stats are HP% sands, Pyro DMG Bonus goblet, CRIT Rate / CRIT DMG circlet. Roll substats in the order CRIT Rate > CRIT DMG > HP% > Energy Recharge.
Talent priority is Normal Attack > Elemental Skill > Elemental Burst. The Elemental Burst costs 60 energy, which is what an Energy Recharge target has to clear.
The strongest team is Hu Tao, Aino, Furina and Citlali, built around Hu Tao: Hydro · Vaporize.