SimpleX - Here is a presentation about SimpleX. It is a fairly new messenger, but they are trying to approach the problems a bit differently than before: they focus on protecting communication sessions. SimpleX supports Tor, allows you to set different communication channels per contact, not just for the entire messenger (a bit like having many profiles at the same time). No registration is required. The program data base can be packed locally on the phone and copied to another machine. So everything is in your hands. SimpleX is often indicated as a better replacement for Telegram.
Signal/Molly - this is the gold standard of secure messengers. I have no objections to the messenger itself (client), but the centralized server on Amazon AWS, which requires registration, raises doubts. They could fix this, for example, by registering via email, not by phone number. Molly supports sock5, so it will work well with Tor. Signal is good for communicating with close friends and family. Supported by Open Technology Fund (CIA).
Briar - its advantage is various transport channels. It can work without the Internet using a local network, Bluetooth or even copy messages via some medium (SD, USB). Here is a presentation. Funded by CIA via Open Technology Fund (Radio Free Asia)... but Tor is also a US military project.
Session - here is a presentation. This is also an interesting messenger, but unfortunately it looks like they sacrificed security too much due to this simplification (Link 1 and link 2). Session is the most resistant to censorship, so it can also be an alternative to Telegram. Initially, development was in Australia, but after a police visit, development was transferred to a Swiss-registered foundation.
EDIT: Briar no calls support. SimpleX allows you to set up your own server for calls.