It seems that Handelszeitung made a quite strange comparison for online-payments, or Yuh (from where I have the data) just took only half of the data to hide the real costs: https://library.yuh.com/shared-images/currency-exchange-comparison-chart-de.
According to this chart Yuh has the best exchange-rates (even in the minus area…!). Unfortunately, this data is absolutely bs and not helpful since at the end of the day it’s the exchange rate AND the fee for the transaction in the foreign currency that makes the whole cost. I’m pretty sure that Wise and Revolut are still the number one when it comes to the lowest overall-cost.
Maybe somebody has the Handelszeitung-article at hand? The article is only accessible for subscribers, I guess (Online-Bank Yuh hat bereits mehr als 20'000 Kunden - die Hälfte kam von Postfinance und Swissquote | HZ)