The phrase "are less visibly" is correct and usable in written English.
It can be used when comparing the visibility of two or more subjects, indicating that one is not as visible as the other.
Example: "The stars in the city are less visibly bright than those in the countryside due to light pollution."
Alternatives: "are less apparent" or "are not as noticeable."
India's Assam Rifles, a paramilitary force with sweeping powers and a reputation for arbitrary violence and arrest, are less visibly deployed these days across much of the state.
Perhaps that is because computers are less visibly polluting, or their use is not deemed, like air travel, to be frivolous and unnecessary.The aviation industry has found itself on the defensive, emphasising its efforts to switch to less fuel-hungry aircraft in the coming years.
They'd found him about fifteen feet behind the wrecked Humvee; he'd been blown out the gunner's hatch and was less visibly torn up than Seiden.
Her Tracy is less visibly assured, more wistful than Ricki Lake's was in the film version, and this gives the audience a firmer grasp of empathy.
I suppose I am less visibly attached to my children in a sense because they have your surname – maybe there is a tiny fear that it may cause problems some day – being frisked at border controls or something.
Barri is less visibly disturbed, but he's worried too and says he feels as though he's walked into a "blanket of energy, like a fog".
This gives both campaigns a chance to reassess where to spend their money and how to divide it between the air war, on television, and the ground war, which is run less visibly on radio and direct mail and is aimed at getting out the vote.
This constant desire for improvement is re-energising him now, even with Mike Brown established as England's first choice at 15. Goode's versatility should ensure a World Cup squad place but he hates the lazy perception that, somehow, he is less competitive than the more visibly feisty Brown.
This is forcing the EU to confront some extremely tricky choices about the future role of nuclear power choices that are now also being explored, if less visibly, further afield, including in America.The new EU members mostly used nuclear technology of Soviet design which, with Chernobyl in mind, greatly worried existing EU members.
These actions have always been performed, but less visibly, and no more obviously, by publishers.
He was visibly frustrated, visibly pressing, visibly confused.
