I find all of the Yamaha models, even the tyros limiting if trying to do extensive sequence editing like your are asking.
Korg i3 & i30 I have owned in the past were certainly good at the things you are wanting to do. Possibly the Korg PA80 may provide the same facilities, but I have not tried the sequencer on the PA80.
Possibly a PA80 owner could add comments regarding the limitations of the PA80 sequencer.

You could record into a PC Sequencer and then load back into your keyboard and change any GM track voices for your inbuilt panel voices.

Just a suggestion. Graham UK.