a political philosophy, movement, or regime (such as that of the Fascisti)
Could be leftists, conservatives, or any other political group.
that exalts nation and often race above the individual
Well that excludes conservatives, because conservatism celebrates rugged individualism.
Leftism, by contrast, embraces groups above individualism. This is what conservatives usually refer to as neo-Marxism. It's also known as identity politics. It's this idea that we're all members of a group, and that group gives us our identity. Then with intersectionality, you have multiple groups defining identity.
Two caveats:
Christians are the exception to the rule, where many conservatives do embrace an identity that can be defined as a group.
Leftists do exalt groups above the individual, but those groups are not normally the nation (at least not in the US).
and that stands for a centralized autocratic government
Yes, in general, conservatives support small government, while leftists prefer government regulations over private business, government handouts for the poor, government taxation of the wealthy, and government control of every little thing in life — basically big government.
Centralized? In the US, centralized means federal control whereas decentralized means State and local control. Leftists generally prefer the former, whereas conservatives generally prefer the latter.
headed by a dictatorial leader
Not applicable in the US, but I wouldn't put it past the Left in the near future.
severe economic and social regimentation,
Yep, see this thread for instance. Leftist love regimented control over what we're allowed to think, and they love silencing the opposition.
and forcible suppression of opposition
Oh, you mean like when Biden has his primary opponent, Trump, tied up in court with accusations and a threat of imprisonment? Or, you mean like this very thread where leftists are trying to silence the TERFs? Yes, leftists absolutely love the forcible suppression of their opposition.
In conclusion, no, it's not a perfect fit for leftists, but it's loosely close — and it certainly doesn't fit conservatives even slightly.
Nero