/e/ Apps as apks are at e / os / android_prebuilts_prebuiltapks_lfs · GitLab … but you’ll need to self sign to install them - it makes more sense to install their non-fork from the F-Droid Appstore.
For your question you’ll need… Davx5, Etar, k9mail and Nextcloud-Notes. Then there’s Nextcloud-Client for the photo sync. Another user recommended “FolderSync” as commercial webdav App that seemed pretty well made.
I once catalogued all upstream App-Ids for fun at /e/ upstream default Apps re-installed.. why? bc! … but there are a lot of other good substitutes too