looks like types of ogo macroalgae
+1. Most of OP's algae appear to be species of
Gracilaria (ogo), which are highly variable (can be flat, tubular, etc.), red macroalgae that are used for nutrient export and feeding herbivores. They may also be species of
Halymenia, which are similar, decorative algae.
Probably not exact matches, but here are some similar species:
Gracilaria tikvahiae:
Gracilaria curtissiae:
Gracilaria hayi:
The fuzzy macroalgae may be
Galaxaura; captive individuals usually lack the surface filaments:
https://www.marineplantbook.com/marinebookgalaxaura.htm
Galaxaura rugosa:
I'm not so sure about the algae in the first picture, but fleshy algae like these (ex.
Nemastoma,
Predaea,
Scinaia, or even possibly some species of
Gracilaria) are generally harmless and decorative.
The last one may be a type of undesirable red turf algae:
https://www.reef2reef.com/threads/the-red-turf-algae-battle.365765/
