Magento 2 has added lot of new module and feature as compared to magento1x. It has some hidden dependencies. so, it slowdown magento 2 store. It is most common list of modules which generally do not required. You can add and remove module as per your requirement. You just need to add these modules in composer.json file and then run composer update.
"replace": {
"magento/module-authorizenet": "*",
"magento/module-google-adwords": "*",
"magento/module-send-friend": "*",
"magento/module-signifyd": "*",
"magento/module-bundle-graph-ql": "*",
"magento/module-catalog-graph-ql": "*",
"magento/module-catalog-inventory-graph-ql": "*",
"magento/module-catalog-url-rewrite-graph-ql": "*",
"magento/module-cms-graph-ql": "*",
"magento/module-cms-url-rewrite-graph-ql": "*",
"magento/module-inventory-graph-ql": "*",
"magento/module-configurable-product-graph-ql": "*",
"magento/module-customer-graph-ql": "*",
"magento/module-downloadable-graph-ql": "*",
"magento/module-eav-graph-ql": "*",
"magento/module-graph-ql": "*",
"magento/module-grouped-product-graph-ql": "*",
"magento/module-quote-graph-ql": "*",
"magento/module-store-graph-ql": "*",
"magento/module-swatches-graph-ql": "*",
"magento/module-tax-graph-ql": "*",
"magento/module-url-rewrite-graph-ql": "*",
"magento/module-weee-graph-ql": "*",
"temando/module-shipping-m2": "*",
"dotmailer/dotmailer-magento2-extension": "*",
"klarna/module-kp": "*",
"klarna/module-ordermanagement": "*",
"klarna/module-core": "*",
"amzn/amazon-pay-sdk-php": "*",
"amzn/amazon-pay-and-login-with-amazon-core-module": "*",
"amzn/login-with-amazon-module": "*",
"amzn/amazon-pay-module": "*",
"vertex/module-tax": "*",
"vertex/sdk": "*",
"yotpo/magento2-module-yotpo-reviews": "*"
},
