Remember you can assign object to multiple collections(Shift+M). If they use linked data you can use shift+L->object data. You can also select object then in material tab of properties editor select material then in viewport press Shift+L->Material if they share material. You can also assign them a color under properties editor->Object tab->Viewport display panel->Color. Then you can use shift+G->Color. If they have parent/children relationship then you can use shift+[ and shift+]. If the names contain similar parts or pattern you can use select menu->pattern. Use * if the part is in between other letters and numbers. For example *Window* for window anywhere in the name. If it starts with Window then Window*. If it ends with window then *window. If there are spaces on both sides then you don’t need the *.
