My access logic does not work in 5

I have started developing in 4.7 but now switched to 5rc1. In 4.7 I used nodeaccess module to achieve this simple security measure:

All stories accesible/viewable/searchable by both auth and nonauth except those created by user X
All pages accesible/viewable/searchable by both auth and nonauth except those created by user X

The rest of the content acessible only by authenticated users.

Please help me duplicate this in 5 - even at the price of hard-coding user X somewhere or putting aa record in the database. Alternativle, please advice on reading necessary to create viewing/searching restrictions by content type only.

Thanks