Now I need to reinstall some software, so it's good to revisit and update my old migration notes.
In Summary...
I like to:
add-apt-repository ppa:libreoffice/ppa
apt-get install restic chrony file-roller gedit xournal evince nomacs graphicsmagick ghostwriter emacs gimp gimp-plugin-registry gimp-gmic default-jdk gcc make ttf-mscorefonts-installer ruby libsecret-1-0 libsecret-1-dev
sudo make --directory=/usr/share/doc/git/contrib/credential/libsecret
git config --global credential.helper /usr/share/doc/git/contrib/credential/libsecret/git-credential-libsecret
snap install code --classic # or download deb and install
snap install aws-cli --classic # or curl,unzip,install
Note: ttf-mscorefonts-installer requires user interaction to install, so don't walk away from it overnight thinking everything will be done by morning.
Then install by hand Chrome, Netbeans, and LibreOffice dictionaries etc.
Oh, for chrony, I like to also have added to /etc/chrony/chrony.conf : server time.apple.com iburst because where I am it's hard to get to a time server except Apple's.
See more info about each below.