Here are information about exchanges that offers rewards through staking and name of the coins that they support on their platforms

1. HUOBI WALLET: ATOM, ONT, IOST, LOOM, IRIS, IOTX.

2. KUCOIN: TEZOS, ATOM, IOST, LOOM, EOS, VSYS, TRON, ELA, EOSC, IOTX, LOKI, NEBL, ENERGI, TOMO, NULS, WAN, PIVX, ONION.

3. BINANCE: VET, XLM, TEZOS, ATOM, ONT, TRON, STRATIS, QTUM, ONE, NEO, KMD, ELROND, FET, ALGO

4. GATE: TEZOS, ATOM, ONT, EOS, VET, TRX, SERO, NAS, ALGO

5. OKEX: TEZOS, ATOM, IOST, CRO, EOS, VSYS, YOU

6. BIBOX: BTM, ATOM, IRIS

7. COINBASE: TEZOS

8. BITMAX: ALGO

9. KRAKEN: TEZOS

As you can see all these staking are from top exchanges, my advice is to stay away from low rated exchanges that offers staking service, very soon they will claim to offer same service as well, if you have something else to add on the list pls do