That said, Doug Jones, campaigning against the alleged paedeophile Roy Moore last year, campaigned on a decent centre-left hybrid platform but has voted with Trump 60% of the time, which is amazingly bad and a cautionary tale.
I don't know that that's completely fair. FiveThirtyEight's congress tracker has him voting less frequently with Trump than expected (52%). I think there's room for some pragmatism here. If you expected Doug Jones to run a particularly progressive agenda then you set yourself up for disappointment. He's still voted with Trump 20% less than the GOP representative who voted the least with Trump, and he did it in a very red state. Any GOP candidate, much less Roy Moore, would have been a far worse result. And you may scoff at that and call it engaging in "the lesser of two evils", but... again, some pragmatism is needed when you're talking about a Democrat in Alabama.
As far as I know his vote hasn't been decisive in killing any progressive agenda in the House (correct me if I'm wrong), and you know as well as I do that he doesn't have a chance in hell of getting re-elected if he plays it completely straight progressively.