Alternative index ETFs for index futures

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NDX-100 Long: QQQQ
NDX-100 Short: PSQ

Dow 30 Long: DIA
Dow 30 Short: DOG

SPX Long: SPY
SPX Short: SH

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2X NDX-100 Long: QLD
2X NDX-100 Short: QID

2X Dow 30 Long: DDM
2X Dow 30 Short: DXD

2X SPX Long: SSO
2X SPX Short: SDS

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3X Long SPX: UPRO
3X Short SPX: SPXU