Arturia’s new 88 key AstroLab finally realises the full potential of the ‘avant-garde’ stage keyboard Arturia upgrades its MicroLab MIDI keyboard with new keybed, sustain input and USB-C - and slashes ...

Unfortunately, I'm not aware of any decently weighted keyboards with less than than 88 keys. They're known as 'digital pianos' rather than 'keyboards' or 'synthesizers'.