Marcus still exists in the US. I use them for my savings account. They don't have anything besides that that I know of (checking, brokerage). Current APY 4.1% so as good as you can find in a savings account here.
Fidelity Cash Management has a 4.5% yield (which is also state-tax free for those in states with income tax, which could be a boost of up to 0.5% for some).
My American Express savings account gets me an APY of 4.1%, so there's other options, but agree that it seems like either are the best rate I've found in the US.
