For example, using ptyxis, when choosing a font, it shows a bunch of weight options for each font type like “JetBrains Mono Bold”. But when using gnome-terminal, it only lists “JetBrains Mono” without any obvious way to select weight.
You’ll need to use the dconf command line to get the ID for the profile you are using in GNOME Terminal and set the font.
To get the list of profile IDs, run the following command:
dconf dump /org/gnome/terminal/legacy/
To set the custom font string, use the following command, replacing profile-id with the correct profile ID from above and Monospace Bold 14 with the font name and font size that you want to use: