What are the most interesting places that auctions are used onchain?

What flavour of auction do they use?
(English, Dutch, Vikrey, something else?)

One Noun, every day, forever.                               
https://nouns.wtf

Action sports accelerator and community owned brand. Headless so you can shred more. We bring shredders onchain and get them paid. /gnars gnars.com ⌐◨-◨

The most frictionless experience to search and trade over 7 million tokens across 130+ DEXes and 9 chains. It happens on /matcha 🍵.

Swap now: matcha.xyz

The largest onchain marketplace. Buy and sell crypto on Ethereum and 10+ other chains.

Funding experiments in Public Goods
https://publicnouns.wtf/

Come hang at /publicnouns

Devcon is a non profit event, organized by the Ethereum Foundation. It is about the future of technology and society, not just Ethereum.
BKK 12-15 Nov
/devcon

▀▄▀ Vrbs is a Nounish DAO on Base. With Vrbs, you can earn a vote for your efforts. 1/1 art created by the community with daily auctions @
vrbs.build

You are likely aware of most of these, but some of my favorite onchain auctions are:
- Solver auctions based on intents (like CoW Swap, @uniswap X, @matchaxyz,...) 
- Nounish auctions that fund amazing DAOs (like @nouns @publicnouns @gnars @vrbs )
- Useful IRL auctions (like @devcon tiks) 

I also think fair-launch auction mechanisms should be used for the start of most bonding curves.