It's a natural direction to hop from Meshtastic to Meshcore.io as the community grows.

They are implemented a bit differently. The chatty nature of Meshtastic works very well in small groups, or unknown area, when you need to talk a bunch of your friends scattered during a trip, to monitor your tracktors on a large field, etc..

Then you try to scale it to a larger city and it just completely breaks. Then Meshcore.io enters the picture. Every larger community that switches says the same - it's a huge reliability difference. It also comes at a cost of some discipline and more infrastructure planning (repeater nodes).

The more I play with both the more I respect both projects.

As for Reticulum, I don't see it competing in the same category at all. It has much higher aspirations, but also it seems at the moment it's much less practical and popular.