These are the keyboard shortcuts I use on all my edits. Hover or tap any glowing key to see what it does in Lightroom Classic. When you think you've got them, hit Game Mode and test yourself.
You know your way around. The last few keys are the ones that actually save you hours.
Single keys get you fast. These combos get you dangerous. On Windows, swap Cmd for Ctrl and Opt for Alt.
Drop your email and I'll send you this whole keyboard as a clean PDF cheat sheet. Print it, stick it next to your monitor, and your hands will know every key within a week.