Here are the original 200x100 images (taken from Blender's splash screens of various versions), click on them to toggle upscaled version to that type:

Scaled up 600% to 1200x600:

Use buttons below to toggle between various applications and their scaling algorithms.
Bold buttons indicate generally "default" scaling choice in each application.
Each column is what looks like the same or almost exactly the same algorithm.

Bilinear Lotsa Blur Is this Mitchell? Is this Bicubic? Sinc based Sharp Arse!
Gimp 2.10.36
ImageMagick 7.1.1
Krita 5.2.2
DaVinci 18.6
Blender 4.1