Made a few suggestions related to the creation of multi-colored gradients.
@ericp suggested an additional idea that turned out to already exist in Vectorstyler.

Here the Link:
https://www.vectorstyler.com/forum/topic/5687/alternative-ideas-for-gradient-creation/8

I'm posting this idea here again so that other users can find it too.

Note:
Colors in a color palette can be selected this way
hold Ctrl (Win) and select colors in any order.

Hold Shift key (Win) to select a bunch of colors in
the direction of a line.

The Selectet colors can be dropped via drag and drop
onto a selected object with a Gradient.
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Here the Steps for other Users:
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Create or select an object with a gradient.

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Select the colors in a color palette while holding
down the Shift or Ctrl key (Windows).

Drag the selected colors from the color palette onto the object
with the gradient. The object's fill will change to
a solid color.

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Now, drag the gradient again with the Gradient Tool, and
the gradient will now display the colors you selected.