Just wanted to share with everybody what we ended using for our latest A/V show (2x MBP Silicon, one running Ableton Live, one running Isadora) to trigger scenes and events from Ableton into Isadora. This solution revealed to be reliable, and never failed us. We brought it on tour, and it worked 100% from the moment we would plug it in. This interface has USB-C so no need for adapters.
mioXC - USB-C 1x1 MIDI interface from iConnectivity. https://www.iconnectivity.com/...
We had tried many other solutions (Ableton Link, Network (wired, wireless), and while some worked most of the time, they randomly failed, which didn't make for a reliable enough solution. MIDI often got saturated when using network. And the specific scenario (short Soundcheck times, our gear staying on tables backstage between soundcheck and changeover without continuous power, having to reconnect in the dark...) was already stressy enough for all the things that could go wrong...
I received MIDIs in Isadora from Ableton Live on a specific/separated channel to trigger scenes. Other inputs were used to trigger transitions/events. Also, some MIDI notes triggered lighting cues directly in Lightkey on the same laptop as Isadora, which allowed for more complex lighting looks (especially when using moving heads, that was gold!).
That´s all! hope it helps!