Oh, you still need the Mork Borg license I think, since it's all under that umbrella. You can also add a line afterward about Fisk Borg.
Something like:
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MÖRK BORG Third Party License - UGLY FISK is an independent production by ScottishRooster and is not affiliated with Ockult Örtmästare Games or Stockholm Kartell. It is published under the MÖRK BORG Third Party License. MÖRK BORG is copyright Ockult Örtmästare Games and Stockholm Kartell. For further details about the MÖRK BORG Third Party License, see https://morkborg.com/license/
Elements of Fisk Borg (https://kumada1.itch.io/fisk-borg) by Richard Kelly and World Champ Game Co are used with permission.
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I'll reach out to Adam to verify that this is okay.