Voting for a GUE/NGL or G/EFA party might be your best bet. Or EFDD, assuming they still exist
Since the intra-group differences are pretty big, it is smarter to look at the voting behavior of one's own national party rather than the group as a whole.
Maybe so, but the initial point implied that the best way to oppose this was to vote for "more" (read populist) right wing MEPs. All I did was point out that isn't consistently the case, especially seeing as the groups are still the
easiest way to get a rough-ish picture.
Also, some of us will be affected by this, even without having a "national" party we can actually vote for.