@andreaboi.eth
For vector mainly I use Adobe Illustrator, for simple things Figma/Sketch then export to svg to Illustrator. Graphics: Photoshop, Figma, Sketch.
For Illustration I use Krita and sometimes Photoshop for advanced edits. The Iso fractal artworks were 3D but exported as 2D render with path tracing, made with MagicaVoxel. The process I use for creating pixel illustrations is explained here and involves both Photoshop and Illustrator: https://paragraph.com/@design-journey/cryptopiskelli