Help with Filtering Funding Stages: Seed, Series A, and B

Hi @everyone, Just a quick question: I have to filter the Funding stage and just include Seed, Series A and Series B in a column, how can I do that? I have tried conditional formula, it gave me a clean list that only incl the above three, but I want it to be filtered, how can I do that? I tried using filter too, but its not giving the desired results TIA