"I likewise, my brothers and my servants, lend them money and grain" (5:10). Was Nehemiah doing the same thing as the nobles?

The chapter doesn't say, and these notes don't guess. Here is what it does say. Nehemiah, with "my brothers and my servants", was lending "money and grain" (5:10). In Hebrew, the verb the WEB gives as lend there is the one it gives as exact in "You exact usury" (5:7) and as charging in "that you are charging them" (5:11) (tap lend). The word for usury is a separate word (tap usury), and the first sentence of 5:10 doesn't use it: it says only that they "lend them money and grain" (5:10). The next sentence has "us" in it: "Please let us stop this usury" (5:10). Then he asks for the fields, vineyards, olive groves and houses, and "the hundredth part", to be given back (5:11). Those he contends with and charges are "the nobles and the rulers" (5:7). And of his own years as governor he says, "I and my brothers have not eaten the bread of the governor" (5:14), "We didn’t buy any land" (5:16), and "I didn’t demand the governor’s pay" (5:18). Whether his own lending carried usury, the chapter leaves unsaid.