Launchpad currently recommends translating gtk+3.0 in Ubuntu Focal.

Template "gtk-3.0" in Ubuntu Focal package "gtk+3.0"

Language Status Untranslated Need review Changed Last Edited By
Cherokee 100.00  100.0% untranslated 1682 1682 0 0
Dakota 100.00  100.0% untranslated 1682 1682 0 0
Hawaiian 100.00  100.0% untranslated 1682 1682 0 0
Inuktitut 100.00  100.0% untranslated 1682 1682 0 0
Lakota 100.00  100.0% untranslated 1682 1682 0 0
Ojibwe 100.00  100.0% untranslated 1682 1682 0 0
Spanish 000.30  99.7027348395% translated  0.297265160523% untranslated 5 5 4 4 5 5 2020-04-08 08:42:50 UTC 2020-04-08 Ricardo Pérez López
Tlingit 100.00  100.0% untranslated 1682 1682 0 0
Yiddish 097.80  2.19976218787% translated  97.8002378121% untranslated 1645 1645 0 0 2019-02-23 12:12:34 UTC 2019-02-23 Raphael Finkel
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Template "gtk-3.0-properties" in Ubuntu Focal package "gtk+3.0"

Language Status Untranslated Need review Changed Last Edited By
Cherokee 100.00  100.0% untranslated 2244 2244 0 0
Dakota 100.00  100.0% untranslated 2244 2244 0 0
Hawaiian 100.00  100.0% untranslated 2244 2244 0 0
Inuktitut 100.00  100.0% untranslated 2244 2244 0 0
Lakota 100.00  100.0% untranslated 2244 2244 0 0
Ojibwe 100.00  100.0% untranslated 2244 2244 0 0
Spanish 000.00  100.0% translated 0 0 0 2020-05-20 11:12:02 UTC 2020-05-20 Ricardo Pérez López
Tlingit 100.00  100.0% untranslated 2244 2244 0 0
Yiddish 070.81  29.1889483066% translated  70.8110516934% untranslated 1589 1589 0 0 2019-02-23 11:47:21 UTC 2019-02-23 Raphael Finkel
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Key to this table: “Unchanged” means Translated
and “untranslated” means just that, Untranslated

Other versions of gtk+3.0 in Ubuntu