Solidworks is the industry standard for industrial design. I have been using Solidworks since 2015. Solidworks is most powerful when dealing with complicated projects that require lots of sub-assemblies and other components. I mostly use Solidworks for more complicated and involved projects such as large industrial machines, complicated robots and others.
Autodesk Fusion 360 is the software I use most. I have been using Fusion 360 since 2016. Fusion 360 is best suited for smaller projects that might have more complicated geometry. It is very intuitive and has very similar abilities to Solidworks. Fusion 360 also has Generative Design capabilities which has proven to be a super cool and useful tool.
Blender is an open source 3D computer graphics software. Although it has many capabilities, I primarily use blender when ultra-realistic renders are desired. Although I am not a blender expert, I have been using blender since 2020 and I hope to have opportunities to learn more!
Autodesk Eagle is an electronic design software. It is used to design the schematic and the layout of PCB's using a nearly endless component library. I first learned Eagle in 2017 for certain robotics applications and I have been using it sporadically throughout the past few years. I use Eagle to design PCB's for clients who have a product idea that has an electrical engineering component.
Structure Synth is a generative software. It is best at artistic designs rather than anything mechanical. I first learned Structure Synth in 2018 and, although the learning curve is steep, it is a super cool software to know how to use but it has very limited abilities when it comes to mechanical components - it is primarily intended for artwork.