for the top pan drawer, I've used the "hidden" internal drawers, I think they are 83mm deep but others are available. You can put the rigid liners in them if you have lots of cutlery, keys, pens, torch batteries, assorted small junk.
For the large drawers, there are "walls" and "dividers" that clip in and you can rearrange them to your whim. I use Blum and they clip into raised side and back pieces that double the depth of the drawer "tray" and prevent things falling out, also make it more rigid. Other manufacturers doubtless make something similar. Hafele is another big brand. If you are in doubt of the make of your drawers, take them out and it is probably stamped on the metal side runners or something. Places like B&Q sell something that looks similar but is not as good.
Hardware suppliers are usually cheaper than kitchen showrooms.
Plates are very heavy and might crack if you pile them up. IMO they are better in wall cabinets, with plenty of shelves so you can have small piles, say, six inches, but big enough to take your serving dishes. Some dining plates are just too big to fit in some wall cabinets. You can get larger wall cabs that your matching doors will fit; either "boiler cabinets" that are about 450mm deep, or made to order in matching material. Sometimes they will just fit if you cut the back wall out.
lift-out plate-holders here might be rather heavy.