Mineplex, Cubecraft, HiveMC, Manacube, Jartex, HCF Servers (Like VeltPVP, Vipermc, WaterMC, and some smaller ones). Practice servers like Lunar, Mineaqua, Ghostly Network, and Minemen. I also do servers like thearchon, datblock, minebox, blockdrop (bedwars.games), bedwarspratice, mccentral, mineland, invadedlands, another good one is brokenlens and for survival sometimes skittlemc but invadedlands is better (opinion). Some smaller verus servers as well (most spanish servers use verus). Gamesmadeinpola as well is another good minigames one. I have a lot more but that should be good for now. I dont use astolfo for all servers due to astolfo does not work best on a lot of non-pixel servers but astolfo has a verus disabler, and it has ghost settings, so should be able to find something that works! Have fun.
Edit: Astolfo also has some cool mcc and mmc things. (mccentral and minemen). Otherwise just ghost or keep attempting to make a config until success, should be able to.