Pretty good summary here:
https://www.doctorofcredit.com/high-interest-savings-to-get/Or you can look into short term or ultrashort term bond funds, or even Total Bond Market if you are willing to trade slightly more risk for slightly more return.
Don't bother with anything lower than the yield of Vanguard Prime Money Market, which is 2.46% right now. Use it instead.
https://investor.vanguard.com/mutual-funds/profile/VMMXXSeriously people, don't get a CD or savings account which yields less than VMMXX. I see people doing it all the time and don't understand why. Or if you are extremely risk adverse, 2.31% for Vanguard's Federal Money Market Fund
https://investor.vanguard.com/mutual-funds/profile/VMFXX. Yes, Federal Government Money Market is safer than CDs. It has several months less term risk, and is guaranteed by the Constitution against the entire assets of the US, while Congress can change FDIC on a whim. If you are willing to accept more term risk then your yield can increase from there, but do not accept less than that.
(Maybe a no withdrawal penalty CD is OK, because you can keep it for 11 months if rates drop, or ditch it if they go up. But then, a Treasury Bill maturing in 15 December 2019 yields 2.584%, so at 2.3% Ally is definitely charging you for insurance
http://www.wsj.com/mdc/public/page/2_3020-treasury.html)