Worth noting is that when we discuss the "RuPaul's Drag Race" winners who never lip synced, we only mean in the lip sync for your life format. Therefore, this list doesn't include "All Stars" winners, who lip sync in the lip sync for your legacy format after winning a challenge, or queens who lip synced at a season finale, as these aren't indicative of a bottom placement in a challenge.
The first that may come to mind is Bianca Del Rio, who won Season 6 of "Drag Race" (via Digital Spy). She was known as a jack of all trades who coasted through the competition on her humor and personality, meaning she was never in peril of leaving. From there, she was succeeded by Season 7's Violet Chachki, Season 9's Sasha Velour, and Season 10's Aquaria (via Primetimer). In this stretch of seasons, only Season 8's Bob the Drag Queen lip synced for her life. Before Del Rio, the only "Drag Winner" who never lip synced for her life was Season 2's Tyra Sanchez, who no longer does drag, per Cheat Sheet.
Queens across the pond haven't been so lucky. Of the three seasons of "RuPaul's Drag Race U.K." so far, none have won without lip syncing for their lives. Season 1 winner The Vivienne competed against Crystal, Season 2 winner Lawrence Chaney lip synced against Tia Kofi, and Season 3 winner Krystal Versace fought against Vanity Milan.
So, there we have it. Just five queens have won "RuPaul's Drag Race" without lip syncing. Still, it's the richest "Drag Race" contestants that may surprise you.