Disk utility and disk format changed after erasing disk
On a mid2015 macbook pro with Mojave installed, after erasing the disk with the disk utility, instead of immediately running the "Reinstall macOS" utility I shut down then started up again. When I got back to the macOS Utilities and invoked the Reinstall it only allows me to install the older (El Capitan). Before I shut down, the Reinstall utility was going to reinstall Mojave. Also, after the restart the disk formatting changed so that the disk no longer contained a container. Also it didn't seem to support the newer APFS file system. Should I just go ahead and install El Capitan, then jump to Catalina from there? Any other advice regarding the disk formatting is appreciated.
MacBook Pro 15”, macOS 10.15