The rules are pretty much the same. A credit union is likely to have the same kind of explainer that tells you the same stuff, except there's magic words like 'share account' instead of 'savings account' and 'member' instead of 'account holder'. And credit unions have to have some 'affinity' requirement. Most credit unions these days just have a geographic requirement (live, work, or worship in a list of counties), but some require a connection to some company or organization, but for otherwise national credit unions, there's often a 'loophole' way to get affiliated; you can often make a trivial one-time donation to become a member of an affiliate supporting organization and then get into the credit union. There's a little bit of smoke and mirrors there, to support the creative fiction that credit unions aren't just banks, but they pretty much are. Just like banks, some are good and some are bad, some will fail in the near future, some won't, and deposits under the $250k threshold are explicitly insured. Updates to rules that affect banks usually lead to updates that affect credit unions, but it sometimes takes a little while longer.

You'll also get notices about board of supervisors elections, which you won't for a bank with stockholders, but might get for a mutual bank.