Self-identified independents overwhelmingly respond to opinion polls in a less conservative manner than people who identify as conservatives in polls, and more conservative than those who self-identify as liberals, just as you would expect.
There are some matters upon which self-identified independents differ systemically from both self-identified liberals or Democrats, and self-identified conservatives or Republicans (including "leaners" in both cases). But, these issues are not, for the most part, easily placed on a liberal-conservative political dimension.
Generally speaking, self-identified independents are less engaged in the formal political process than partisans of either the left or the right. They are less likely to be registered to vote, less likely to vote, less likely to give money to political campaigns, less likely to have attended a political rally, and are less likely to be aware of political issues or to correctly answer questions about who their current elected officials are.
Also, at a fine grained issue by issue, official by official, level, independents, while collectively in a moderate position, tend to take positions that do not show a coherent overall ideology, and are heavily influenced by non-policy/partisanship oriented factors (e.g. amount of advertising and the perceived persona of an individual official or candidate).
Historically, there have been times in the U.S. when self-identified independents have been more distrustful of government and of large private businesses and institutions than either conservatives or liberals, and more xenophobic. But, this hasn't been the case since at least President Trump's first Presidential campaign, and probably quite a bit earlier.
I also share the sentiment expressed in the comments that looking at a number like "44% approval among non-independents" is a weird way to parse the numbers when "non-independents" are made up of Republicans who have one very strong view, and Democrats who have more or less the opposite very strong view, and the total value for "non-independents" is a function of the relative number of Republicans and Democrats, and of the relative intensity of approval or disapproval by members of both parties. Trying to lump a group of voters known to have a strong bimodal distribution of views just obscures a meaningful understanding of the data by implicitly treating a group of people that are not a coherent cluster as if they were simply by lumping them in a single category whose make up is a priori rather random.
