Using small bowls as placeholders, create space on a very large board or platter for the latkes, smoked salmon and smoked fish, and caviar. This will let you keep your latkes warm and the smoked salmon, fish, and caviar refrigerated while you assemble the rest of the platter.
Place the accompaniments for caviar—egg whites and yolks, chives, red onions—in small condiment bowls and place on the platter. You can place them in the center of the platter as shown, or anywhere else, though keeping them all together is ideal.
Position bowls of capers and/or caperberries, olives (and other pickled/brined ingredients) on the platter.
Arrange sliced apples and cucumbers in fans on platter, then add radishes and tomatoes.
Layer smoked salmon ribbons on the platter, then spoon smoked whitefish and smoked salmon dips into their bowls (placeholders).
Add warm potato latkes, cauliflower latkes, and sweet potato waffle fries to the platter.
Fill in the rest of the platter with sweet potato chips, kettle-style potato chips, purple potato chips, and bagel chips.