Instagram only allows a single click-able URL in the profile. Most people seem to use a service called Linktree. To get a feeling for the format, here’s an example by Alicia Keys and one by the MoMa.
I often forget the name of this thing, then I search for it, and forget it again later. It’s the Whole Value Pattern. The “Whole Value” pattern means you should get rid of using primitive or literal data types as quickly as possible. (Since Swift has no non-object primitives, you have to look a bit harder to spot these, but “literal value” is a pretty good indicator.)