Isaac

As an English name, it's very popular in English-speaking African countries like Ghana, Nigeria, Kenya, Uganda and Malawi.
https://forebears.io/forenames/isaac

Amharic forms of Isaac often used in Ethiopia are Yishak & Yishaq. [noted -ed]

Also one of the Portuguese forms: https://pt.wikipedia.org/wiki/Isaac [noted -ed]

Also Portuguese:

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https://pt.m.wikipedia.org/wiki/Isaac
https://www.behindthename.com/name/isaac/top/portugal

Also Judeo-French and Judeo-Provençal: https://www.ellipsis.cx/~liana/names/jewish/levy/isaac.html

Also used in French: https://meilleursprenoms.com/popularite-prenom/Isaac [noted -ed]

Also Judeo-Anglo-Norman: http://heraldry.sca.org/names/jewish.html

Also Gascon, Provençal and Languedocian: https://ieo-oc.org/spip.php?page=article&id_article=290 --- Source: Institut d'Estudis Occitans

Also Galician: http://www.ige.eu/igebdt/esq.jsp?idioma=gl&ruta=onomast/nomes.jsp
https://gl.wikipedia.org/wiki/Isaac

In 2018, 3 is the most common age for an American (U.S.) Isaac who is registered male with the Social Security Administration. It is the 304th most common male first name for living U.S. citizens.

Maybe it's Japanese. Isaki Lacuesta is a Spanish director but maybe is of Japanese descent because in film affinity is related to Naomi Kawase.

Maybe Isaki is a basque form.

Catalan form of Isaac. [noted -ed]