github.svg - GitHub in a Gitlab styled logo
javascript.svg - JavaScript written in a Java-styled font + the Java logo (Sun/Oracle)
pip.svg - Pip (the python package manager) styled in the npm logo style (node.js package manager)
rails.svg - Ruby on Rails with pretty much the rails logo, but in the color of WordPress. Also the "RubyOn Rails" text theming is in the style of the WordPress logo typography
react.svg - ReactJS in a the Angular logo, including the font style
rust.svg - (this one was truly painful, personally :P) "Rust" (the language) displayed in the node.js logo font styling, including colors
ubuntu.svg - "Ubunutu" styled in the debian (linux distribution) font styling, along with the debian logo. This one specifically, is where the hybrid feels the most accurate since Ubuntu is a debian-based linux distro, but I do believe the communities don't get along very well (or at least that's the running joke)
vscode.svg - VS Code (Visual Studio Code, the IDE/Text Editor) displayed in the "Vim" logo font styling and the logo with the stylized "V"