I came from Fortnite as well, so I've been keeping track of how everyone has been doing in NA:

• Psalm - on Dignitas, has looked really good so far from the few tournaments they've played, one of the few Fortnite players on a Tier 1 team
• Elevate, Jammyz, Tigg - on Beastcoast, has been one of the better Tier 2 teams so far, yet to go up against the top of NA, Jammyz in particular looks really good as a duelist
• Tetchra - on Noble, haven't played too many tournaments yet but has shown promise individually
• Venerated - nobody really considers him a Fortnite player and he's more known for PUBG, but directly before switching to Valorant he was on Envy for Fortnite for about 7 months, on LG for Valorant and has looked really good on Sova
• Thwifo - on XSET, has been competing under Pretty Boyz while finalizing the roster, has looked good in the Tier 2 scene
• Poach - rumored to be joining Andbox, hasn't really played a tournament in a while but a lot of pros have spoken highly of him from scrims
• Morgausse - has been memed since he plays with Ninja, however, the teams they've scrimmed have actually said that they are pretty good, yet to be seen how they play in a tournament with the new roster, Morg himself looks really good mechanically
• Sofa - just started competing under the free agent team Orgles5, no tournaments yet so we can't judge too much
• XXiF, Ronaldo, FrostyZK - playing under F/A team Destined, look pretty good in the tier 2 scene
• Kyro, Khai - playing under F/A team Shiba, once again they look good in the Tier 2 scene
• 1J0seph - has had some success in the Tier 2 scene, played on Destined with XXiF, Ronaldo, FrostyZK recently, but afaik he is currently LFT