Ultimately, basically. I have two servers in my homelab, one that is more beefy, which hosts a bunch of stuff (basically everything parent outlined + ), including a DHT crawler, download clients, indexers, databases and a lot more. It's sitting and using 16GB (out of available 126GB) right now. Then I have another which only runs the security system + Frigate + Home Assistant, it's using 2.3GB out of 32GB available.

Web apps like Home Assistant are very light, things like game servers are heavier since they have to load maps etc.