Here are some other updates:
Security Update 2019-007 for High Sierra: https://support.apple.com/kb/DL2026?viewlocale=en_US&locale=en_US
Security Update 2019-002 for Mojave: https://support.apple.com/kb/DL2027?viewlocale=en_US&locale=en_US
Safari 13.0.4 for High Sierra: http://swcdn.apple.com/content/down...a9gejq7jp6525t/Safari13.0.4HighSierraAuto.pkg
Safari 13.0.4 for Mojave: http://swcdn.apple.com/content/down...piw6n8fkjdqv1dxkl3/Safari13.0.4MojaveAuto.pkg
I have also found out that there is indeed a 10.15.2 combo - but not as a standalone download yet. The only way to get it so far is to go from 10.15 to 10.15.2 via the Software Update preference pane (thereby circumventing 10.15.1). If you have 10.15.1 or 10.15.2 betas you will only get the 10.15.2 delta, not the combo.
The standalone combo should be available soon however.
If you want the full installer for 10.15.2 you can get it here: https://apps.apple.com/us/app/macos-catalina/id1466841314?mt=12
You may then proceed to make a bootable usb of 10.15.2 using instruction I posted at https://forums.macrumors.com/threads/bootable-catalina-usb-installer.2183859/
sorry, whats the significance/difference of the combo/delta update path?