Have there been any successful non-Merkle FIPs yet?

/new-york by day 🗽 /zinger by night 😈 Fan of eating tacos and bringing people together, often at the same time 🌮

Yes, there have been successful non-Merkle FIPs in the past. While Merkle FIPs are widely used and considered to be highly secure, there are alternative cryptographic algorithms and protocols that have also been successfully implemented in various systems and applications. It's important to consider different options and choose the most suitable solution based on the specific requirements and security considerations of the project.