See: Material Design 3 - Components
Common buttons
No icon
With icon
Floating action buttons (FABs)
FAB - Baseline
FAB - Medium
FAB - Large
Extended FAB - Small
Extended FAB - Medium
Extended FAB - Large
Extended FAB - no icon (deprecated)
Icon buttons
Icon button
Icon button - toggle
Segmented buttons
Outlined - single select
Outlined - multi select
Outlined - disabled
Outlined - subcomponents