All modern cities count as cyberpunk locals at this point. You have self driving electric cars piloted by an increasingly technocratic middle class driving by the homeless camps that litter and clog the streets and walkways. All the while glittering steel and glass liths scrape the clouds, their innards teeming with human drones operating ever more complex computer systems dedicated to supporting the monstrous corporate bureaucracies that more or less acts as the defacto government via lobbying, campaign funds, and even the writing of laws.
Who supplies the food? Industrial farms owned by a few megacorps. Who supplies the media? A few megacorps who exclusively hoard IP. Who supplies building materials and consumer goods? A few megacorps who work in international and overseas markets to provide the cheapest labor and goods. Who supplies logistical and computational resources. A few megacorps who have come to dominate the communications/software market. In some cases, these megacorps overlap, like in the case of amazon where they are a media, logistics, tech, and manufacturing conglomerate.
If you are not ruled by a conglomerate you are ruled by a dictator who, when they are reminded of the lack of power they hold culturally, religiously, or even traditionally, will neal under fealty to the unity of the conglomerate who has subsumed the largest and most powerful coalition of states or express their interests as a corpo conglomerate (like in the case of Russia). Now you can argue about the ability for this state of afairs to maintain itself, however, one thing is certain. The technocratic financial monoliths are here to stay and right now youre living under their benevolent thumb.
Yes. Singapore is a cyberpunk citie as it exists in a cyberpunk world.