Fidelity – ETF fund alternatives

Hi. My IRA is composed of FZROX, FXAIX, FTIHX, and FXNAX. I'm with Fidelity. These funds have super low expense ratios and are generally well thought of from what I've read.

I have a traditional brokerage account I'd like to explore adding some ETF indexes that are equivalent. It seems though that Fidelity doesn't have ETF equivalents for all 4 of the mutual funds noted above. There is FSKAX which covers FZROX. However for the other three I can't find an ETF alternative from Fidelity.

Suggestions appreciated. Thanks!