Launchpad currently recommends translating grub2 in Ubuntu Jammy.

Template "grub" in Ubuntu Jammy package "grub2"

Language Status Untranslated Need review Changed Last Edited By
Cherokee 100.00  100.0% untranslated 1346 1346 0 0
Dakota 100.00  100.0% untranslated 1346 1346 0 0
Hawaiian 100.00  100.0% untranslated 1346 1346 0 0
Inuktitut 100.00  100.0% untranslated 1346 1346 0 0
Lakota 100.00  100.0% untranslated 1346 1346 0 0
Louisiana French 100.00  100.0% untranslated 1346 1346 0 0
Ojibwe 100.00  100.0% untranslated 1346 1346 0 0
Pennsylvania German 100.00  100.0% untranslated 1346 1346 0 0
Spanish 002.97  97.02823179791976% translated  2.9717682020802374% untranslated 40 40 0 5 5 2022-04-16 00:56:45 UTC Miguel Ángel Arruga Vivas
Tlingit 100.00  100.0% untranslated 1346 1346 0 0
Yiddish 100.00  100.0% untranslated 1346 1346 0 0
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Key to this table: “Unchanged” means Translated
and “untranslated” means just that, Untranslated

Other versions of grub2 in Ubuntu