Magento 1.x Layout Handle List

default
catalog_category_default (* also used in directory.xml)
catalog_category_layered (* also used in directory.xml)
catalog_product_compare_index
catalog_product_gallery
catalog_product_send
catalog_product_view (* also used in customeralert.xml, tag.xml)
catalog_seo_searchterm_popular
catalog_seo_sitemap_category
catalog_seo_sitemap_product

catalogsearch_advanced_form
catalogsearch_advanced_result
catalogsearch_result_index
catalogsearch_term_popular

checkout_cart_index (* also used in googlecheckout.xml, paypal.xml)
checkout_multishipping
checkout_multishipping_address_editaddress
checkout_multishipping_address_editbilling
checkout_multishipping_address_editshipping
checkout_multishipping_address_newbilling
checkout_multishipping_address_newshipping
checkout_multishipping_address_select
checkout_multishipping_address_selectbilling
checkout_multishipping_addresses
checkout_multishipping_billing
checkout_multishipping_customer_address
checkout_multishipping_login
checkout_multishipping_overview
checkout_multishipping_register
checkout_multishipping_shipping
checkout_multishipping_success
checkout_onepage_additional
checkout_onepage_index
checkout_onepage_progress
checkout_onepage_review
checkout_onepage_shippingmethod
checkout_onepage_success

cms_index_defaultindex
cms_index_defaultnoroute

customer_account (* also used in newsletter.xml, review.xml, sales.xml, wishlist.xml)
customer_account_create
customer_account_edit
customer_account_forgotpassword
customer_account_index (* also used in catalog.xml, newsletter.xml, poll.xml, review.xml, sales.xml, tag.xml, wishlist.xml)
customer_account_login
customer_address_form
customer_address_index
customer_logged_in
customer_logged_out
customer_account_logoutsuccess

giftmessage_index_edit
giftmessage_index_save
giftmessage_index_remove

newsletter_manage_index

paypal_express_review
paypal_express_review_details

print

review_customer_index
review_customer_view
review_product_list
review_product_view
reviews

sales_order_details
sales_order_history
sales_order_print
sales_order_view

shipping_tracking_ajax

tag_customer_index
tag_customer_edit
tag_customer_view
tag_list_index

wishlist_index_index