Currently I use Arq to make scheduled (every 120 hours & after 21:00) encrypted cloud backups of macOS to BackBlaze. iOS as well as ~/Documents, ~/Desktop on macOS are automatically backed up to iCloud. Other documents are backed up with Dropbox.
I love the fact that I can set up any new mac or phone to use my exact and perfect setup without any cruft in seconds. All my dotfiles are online and can be setup on any new mac via few commands, thanks to Nix.
Arq - Automatically backs up Macs and Windows PCs.