Which indexer is used for Product Stock Update in Magento 2?

Which indexer is used for the Product Stock Update Magento 2?

If you are updating Product stock status value from the Product page with a click on Advanced inventory, new modal form display stock related data for the product.

When you are updating only Product stock related data, You need to reindex only the cataloginventory_stock index to see changes.

CLI Command : php bin/magento indexer:reindex cataloginventory_stock

When you run this command, the cataloginventory_stock_status table data is updated from the cataloginventory_stock_item table.