Hailey

Also German (Modern):

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https://www.beliebte-vornamen.de/27109-hailey.htm
https://www.behindthename.com/name/hailey/top/germany-berlin
https://de.m.wikipedia.org/wiki/Hayley_(Vorname) - mentions Hailey as the most common spelling in Germany

Also Dutch (Modern): https://nvb.meertens.knaw.nl/naam/is/Hailey

Just as recently as 2021, Hailey currently surpassed the ranking of Hayley in England and Wales according to the UK Office for National Statistics census of England and Wales.
https://www.behindthename.com/name/hailey/top/england-wales?compare=hayley

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A similar thing happened to Ireland, where Hailey is now the most common spelling in present-day Ireland, while Hayley is no longer popular according to the Central Statistics Office Ireland.
https://www.behindthename.com/name/hailey/top/ireland?compare=hayley

Hailey is also used as a masculine given name in English. However, it's more common for females. So, I think that the "Gender" of this name should be updated from "Feminine" to "Feminine & Masculine".

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Source: https://en.m.wikipedia.org/wiki/Unisex_name

How did this name as well as variants of it cross their way into Scandinavia? I thought they were exclusively English names.

In 2018, 7 is the most common age for an American (U.S.) Hailey who is registered female with the Social Security Administration. It is the 450th most common female first name for living U.S. citizens.