being reformist rather than revolutionary, which places them in the center-left imo.

I disagree. That’s more to do with pragmatics than actual political alignment. Historically, leftist revolutions tend to get co-opted by corrupt individuals; the dictatorship of the proletariat has very little to prevent it from devolving into just regular dictatorship. A lasting leftist government needs to be constructed very carefully, which almost certainly can’t be accomplished overnight.

Reformist communists want the same end goal as revolutionary communists, they just see a longer, gradual approach as being more likely to be successful and stable in the long term.