I finally noticed that seekingalpha.com added a tab to their individual stock display. If you click on “Peers,” you see other, similar stocks. For example:
https://seekingalpha.com/symbol/TWLO/peers
So, along with Twilio, you now see NTNX, MDB, OKTA, SQ, and TTD. By looking at Peers of Peers, etc., I also get SHOP, MTCH, NEWR, AYX, PAYC, APPN, HUBS, WIX, SPLK, PANW, NOW, WDAY, DATA, PSTG, ZS, ZUO, PVTL, DOCU, ANET, VEEV, ABMD, ALGN, ISRG, MZOR, LGND, ILMN, ADBE, BKNG, TMO, BIIB, REGN, CELG, CLDR, YEXT, PAYC, TLND…
Small world!