There are actually maybe hundreds of flows here. I have shared several generic ones here too. You can find some interesting ones in my index. (I haven't updated it yet for a long time).
However, since many of the flows are usage specific, you won't find many flows that you interested to, At first I also try a lot of flows here. In the end, I just use some of the concept, develeop my own standard practice and typically design flows only for my very own specific usage. See some of my usages here :
viewtopic.php?f=6&t=8407#p26368
That's why I rarely share my flow, others might thought of the same. Since even if I shared it, there are pratically no other user can benefit from it. I would rather show you how to do/create your own, so you can benefit from your experience directly. But for general purpose ones, I might share it with the full description how to use it. Check out some of my example of flow sharing in the index.
I plan to share my Yeelight Control flow if I have finished the routine set part. That can help others to build color flow for their yeelight. I am also creating flow for my sonoff Tasmota, which I think popular enough to be share-worthy.
On the other thought, Tasker has 1 Million+ install, while Automagic only has 10,000+, so number speaks. It is just somehow that Automagic is not as popular as tasker, so underrated. If we can have the same 1 Million+ installs, maybe there will be ten thousands of flows here.