Currently the default language is indicated with a 'Yes' in the information table and a dark line at the top of the cell/card. This isn't super visible.
I would suggest displaying the default language card/cell first (indeed not respecting alphabetical sorting here) and/or giving it a light background colour.
Cymraeg
Bahasa Indonesia
Bălgarski
Čeština
Cрпски
Dansk
Deutsch
Eesti keel
English
English (UK)
Español
Français
Gaelic
Hrvatski
Íslenska
Italiano
Latviešu valoda
Lietuvių kalba
Magyar
Malti
Nederlands
Norsk
Polski
Português (Brasil)
Português (Europeu)
Pусский
Română
Slovenčina
Slovenian
Suomen Kieli
Svenska
Tiếng Việt
Türkçe
Ελληνικά
македонски
الإنجليزية
فارسی
日本語
英语（美国）
영어
Ychwanegu sylw
Mewngofnodwch neu cofrestrwch i gyflwyno sylw.