Tiny "hairy" invert, non-mobile but spreading

[TheReelColton]

Really curious what these are. I've searched the internet on and off endlessly over the past few months to no avail. One or two has turned to a couple dozen and I'm wondering whether I need to take action. They haven't died off like pineapple sponges usually do.
They look like a cross between a hydroid, aptasia, and feather duster. Very small copepod size, maybe slightly larger.

Also, they were with some peppermint shrimp during QT and they weren't eaten, if that means anything.

Photos and video attached

 

[Rick's Reviews]

Following

Best guess for me is hydroids but just guessing

 

[randomfishdude]

Hydroids.

 

[TheReelColton]

 

[ISpeakForTheSeas]

Yeah, hydroids of some variety.