Many typefaces designed with a pen on paper (especially those from the 20th century) were licensed by different foundries, and were later independently digitized by them. Some special characters such as @ or the euro sign, were independently added later. Those “alternate cuts” are different digital versions of basically the same typeface design. They often vary in character set, letter proportions and kerning. Some are published under different names.
As a student in Zurich, Adrian Frutiger began work on Univers, which would eventually be released in 1957 by the Deberny & Peignot foundry in Paris. The design is a neo-grotesque, similar to its contemporary, Helvetica.