Not sure, maybe "diagramming". Btw there is a good alternative to draw.io for self-hosting called Excalidraw. Very easy to set up with docker.

Nice list! Btw draw.io is not optimized for mind maping. For mind maping I use Freeplane and realy like it.

YT plugin for Kodi is quite decent. Have it daily in use, no issues so far.

Not as powerful as Tasker, but for some basic automation tasks PhoneProfilesPlus is a good alternative.

Nothing wrong with WG Tunnel. Btw Wireguard is on the IzzyOnDroid Repo.

I usually put all the relevant travel data in my Joplin notebook. If the tickets are availible as .passkey files I manage them with PassAndroid. Transportr for public transportation. Wireguard if you need to access your home network via VPN.

I bet soon more airlines will follow. Our cars are no different either. No much options left for traveling.

I love it so much that I put it right away on my donations list.

Have a link?

Using Argon NEO and quite like it. In my case it was important to have the ability to use a HAT (HiFiBerry).

You probably mean Radicale. Baikal is an option too.