Two years ago I bought two 'Family Apple Trees' from
Ken Muir. These were both on a dwarfing rootstock and each have three varieties of eating apples grafted on to it. Last year I did not let it bear fruit, thinking it would be better to let the young tree put its energy into establishing growth - I was right. It has been a great year for 5 out of the 6 varieties.

Gala

Sunset

James Grieve

Lord Lambourne

Russett