Gutenberg Formatting Keyboard Shortcuts for WordPress

Make text bold: Control + B (PC) or Command + B (Mac)

Make text italic: Control + I (PC) or Command + I (Mac)

Underline text: Control + U (PC) or Command + U (Mac) 

Hyperlink text: Control + K (PC) or Command + K (Mac)

Copy: Control + C (PC) or Command + C (Mac)

Paste: Control + V (PC) or Command + V (Mac)

Cut: Control + X (PC) or Command + X (Mac)

Undo: Control + Z (PC) or Command + X (Mac)