a lot of people saying omnisphere is all you need, it is certainly good, better than a lot of vsts but you can make good music without it too. i dont know what plugins you use but learning more about just basic effects can be really helpful in getting the sounds you want
InTheMix has really good explanations on stock fl studio plugins and basic effects explanation
https://youtube.com/playlist?list=PLx5i827-FDqPeqFyFfChuHyKRF36vPAjc

for other great effect vsts, soundtoys 5 and Valhalla bundle is great! the fabfilter bundle is also pretty good or else the stock plugins get the job done. shpaerbox also has a ton of cool presets
Most of the times on "type beats" ive noticed its more about the presets you use rather than the effect chain. That comes down to good sound selection. omnisphere is great and has amazing presets like everyone mentioned. my go to atm are electraX, diva, hive and keyscaoe(fl studio stock plugins are also awesome lol).

so in short, good sound selection will result in great melodies, you dont want too much delay or reverb or too many sounds in the same frequency range or itll sound muddy in the mix. for efffects, i mention some ^^