[R] What tools do researchers use to create great images and flowcharts in their papers?

Actually I was wondering how cool the model architecture diagrams are in good research paper with a clear flowchart of their pipeline and superb visualisation of their model architecture. Currently I use draw.io but was curious what tools are used ? I mean do they use professional tools like Figma, Adobe etc?

architecture clear diagrams good images machinelearning mean paper papers pipeline research researchers research paper tools