Firstly, a group of businessowners. 'local' businesses though most have strong ties to the local port or northern regions of France. Pre-brexit they were mostly close mouthed on the issue, though personal conversations indicated a lean to leave. Post brexit they are generally quite happy; their foreign affairs are relatively easy to keep in order and they have just gained leverage on the local stage.
The other group is composed of PhD students and their professors. I'm a casual aquaintance to these people, mainly on the student end, and have dropped in for lunch a few times (and after work pints). These guys are all anti brexit. I know from the way they make up stories about why people voted out and then insult them - its quite unpleasant. From what I gather very little of their funding comes from the EU, but I'm not familliar enough with their funding system to judge them on it.
It seems we have a shit ton of echo chambers in this country.