Mexican Gothic

The census claim is CONFIRMED on the essentials. The book was written in English by a Mexican-Canadian author, so there is no original-language precedence question. Penguin Random House's own imprint record dates the Del Rey (US/Canada) hardcover to 30 June 2020, and the UK issue from Jo Fletcher Books (London — an imprint of Quercus, Hachette UK), ISBN 1529402654 / 9781529402650, is dated to the same day, 30 June 2020, making the two effectively simultaneous. Both are collected; the Del Rey is the first American edition and the Jo Fletcher the first UK. Caveat: the same-day UK date rests on a single source and is not independently corroborated here, so treat strict simultaneity as probable rather than settled.