Basemap Gallery component
Basemaps with different projections
Edit features in 3D with the Editor component
Edit features with the Editor component
Elevation Profile component
Summarize binned data using Arcade
FlowRenderer with effects and blending
SceneLayerView - query statistics by geometry
Dot density
Animate color visual variable
Watch for changes in components
Weather component
You can also download the ArcGIS Maps SDK for JavaScript 4.34 single archive with all samples.