Roserade: Ban. With the tier slowed down post Duraludon, Indeedee, Raichu-Alola, Tauros, ect. Roserade has become too much to handle. Its spikes became more reliable, its already fast sleep became tougher to outpace, and its breaking power became more noticeable. With the fighting craze going on, it also isn't tough to get in. Fairys like Aromatisse and Whimsicott, and bulky waters like Jellicent and Vaporeon allow Roserade in scott free for most of the game. TlDR it's has too many ways to get in, and once it is in it's very tough to stop because of sleep. 
Virizion: Ban. To be clear I do want a suspect on this thing so the public player base can get some say but I'm also of the opinion that it is broken, so my vote reflects that. Virizion is too tough to deal with defensively, and has just enough defensive utility to get in throughout matches. Between SD, 4 attacks mixed/physical, and CM, Virizion has a set or coverage option for everything in the tier. While it can't run them all at once, I also find matches vs it very often come down to what coverage option certain sets run. This leads to counter play being shaky. It does have quite a bad defensive typing vs faster threats, so you can deal with it offensively very well. This doesn't save it in my eyes though, it's far too good of a breaker and bad for the tier. 
Archeops: Do not ban. Nothing about Archeops feels over the edge at the moment. It has a tough time getting in as it cant really abuse its resistances at all, you cant really make a play vs faster things either because you die to everything or get put into defeatist. Common physical meta checks like rockers and the likes of Weezing and Jellicent do well vs it. Does it kill a lot in the tier? Yea. But I don't see anything overbearing with it for now.
Toxicroak: Do not ban. Croak to me is like a Virizion, but the cracks actually start to show if you don't have the right move at the right time. If you don't have sucker on SD because you want knock for Colbur Palo for example, your offense mu really crumbles. And on NP if you want Shadow Ball for Palo + Weezing you're giving up either Focus Blast or Vacuum Wave, which can make or break your mu vs AV Guzz, Gigalith, and Regirock. Toxicroak is easily one of the best breakers in the tier (top 5 for sure), but I don't think it breaks teams 𝘵𝘰𝘰 well for me to vote Ban just yet.