From my research, it appears that the leading brands for electronic keyboards including digital pianos seems to be Yamaha and Casio, at least when it comes to relatively low-priced quality keyboards, particularly for beginners.
I associate Casio with watches, but it seems they've become reputable keyboard manufacturers over recent years as well.
Just check out these reviews of Yamaha electronic keyboards and reviews of Casio electronic keyboards.
Also check out these reviews of Yamaha digital pianos and reviews of Casio digital pianos.
The term "electronic keyboard" can be quite confusing. Technically, it encompassed all kinds of keyboards that produce sound electronically, and thus include MIDI controllers, digital pianos, digital stage pianos, and workstations. However, since those keyboards already have specific terms, the term "electronic keyboard" is used by manufacturers to refer to the "leftover" keyboards, and that is, usually, the cheap, toy-like keyboards featuring fewer than 88 piano keys, no weighted keys, and low-quality instrumental sounds. However, some of these "leftover" keyboards do have high quality tones and even semi-weighted keys with touch-response, which make them suitable for learning piano for beginners.
But if you're serious about taking piano, as I've learned, a digital piano would definitely be the best bet. A full set of 88 realistically-weighted keys with quality piano sound is ideal for learning the piano! Definitely beats a 61-key keyboard, and worth spending a little more on.