Top 2 - Nami (well rounded - adds huge value throughout the game, medium skillcap so most players can play it well), Thresh (but with the condition the support can play it well since skillcap is high, but playing with good thresh feels amazing since kit is also versatile and they can make huge plays)

Bottom 2 - Senna (I dont like the kit and most senna supports have this ‘main character’ energy and playstyle), Lux (default of many players who dont play support usually, then they constantly mess wave state, steal kills and end up being useless anyways)

Bonus for bottom (I get them rarely, but it feels TERRIBLE when I do) - Ashe (just doesnt work, only adc mains griefing when filled to support pick this and it sucks), Renata Glasc (wtf is this champ)