In terms or good civs the Faith and Science based civs are as a rule of thumb the best in the game. Civs that can get up an early religon (ethipoa, celt) can tailor a religion to a win condition based on their spawn, making them quite suited to every area, while Science based civs can get an early tech lead and then have the lions share of wonders, steamroll with a more advanced military or just go for a straight science victory. Both these types of civs aren't dependant on certain spawns either, making them excellent to all situations. Militaristic civlizations range from very good to very bad (many are spawn dependant), and economic based civs are usually middle of the road. Special shoutout to Denmark for having a uu that has a bonus on a territory nobody cares about. Best civ in the game is widely considered Poland, but I think on a land based map China is the best civ (crazy warmongering).
Personal favorite civs are the Aztec, Egypt and Arabia, but if I'm looking for free wins I'll default back to Babylon or Korea. Really liked the Aztecs even when I only had vanilla, the culture gain from kills can keep you from major unhappiness in the era of idealogies when theres some loser shoving his culture down your throat and trying to force you into unrest. The floating gardens also help keep your cities with a high pop, and subsequently working harder. Egypt can get that early game wonder you want even on Deity, which goes a long way towards a victory condition. Arabia just makes rediculous amounts of money with the amount of luxuries and oil you can trade off, and if you manage to grab a religon you can quickly suppress surrounding civs by forcing them to adopt your religon with your crazy pressure
Also if your looking for a really fun mod download the real world mod in which every civ spawns where they would be located in real life. Forgot what the name of it is now on steam but heres a link of someone playing it as japan, lots of fun to be had in replicating stuff like the mongolian horde.
Also guys dont buy that new space civ its hella bad and i blew $80 on a reskinned civ v
Lol that true start map must be brilliant for spain, as they start off with rock of gibraltar, and can just head south to all the african wonders