llvm-defaults package in Ubuntu

clang: C, C++ and Objective-C compiler (LLVM based), clang binary
clang-format: Tool to format C/C++/Obj-C code
clang-tidy: clang-based C++ linter tool
clang-tools: clang-based tools
clangd: Language server that provides IDE-like features to editors
flang: Fortran compiler
libbolt-dev: Post-link optimizer - Development package
libc++-dev: LLVM C++ Standard library (development files)
libc++-dev-wasm32: LLVM C++ Standard library (WASI)
libc++1: LLVM C++ Standard library
libc++abi-dev: LLVM low level support for a standard C++ library (development files)
libc++abi1: LLVM low level support for a standard C++ library
libclang-cpp-dev: C++ interface to the clang library
libclang-dev: clang library - Development package
libclang-rt-dev: Compiler-rt - Development package
libclang-rt-dev-wasm32: Compiler-rt - wasm32 builtins
libclang-rt-dev-wasm64: Compiler-rt - wasm64 builtins
libclang1: C, C++ and Objective-C compiler (LLVM based)
libflang-dev: Flang library - Development package
liblld-dev: LLVM-based linker, library
liblldb-dev: Next generation, high-performance debugger, header files
libllvm-ocaml-dev: Low-Level Virtual Machine (LLVM), bindings for OCaml
libomp-dev: LLVM OpenMP runtime - dev package
libomp5: LLVM OpenMP runtime
lld: LLVM-based linker
lldb: Next generation, high-performance debugger
llvm: Low-Level Virtual Machine (LLVM)
llvm-bolt: Post-link optimizer
llvm-dev: Low-Level Virtual Machine (LLVM), libraries and headers
llvm-runtime: Low-Level Virtual Machine (LLVM), bytecode interpreter
python3-clang: Clang Python Bindings
python3-lldb: Next generation, high-performance debugger, python lib