Coin rewards — a coin's own reward contract (e.g. $INDEX), only while you held it.
Creator rewards — airdrops from the wallet that created a coin you held at that moment.
Nothing is guessed: every incoming transfer is classed as a trade, bridge, reward, transfer or spam; token balances are replayed against their history. Your own trades are never counted.
Limits: values use today's price, not the price on the day you were paid.