Yes, there is.
There's some recent testimony from doctors who've worked in al-Shifa hospital in the past. Here's an excerpt from a British doctor who worked there in 2020, interviewed by France24:
“When I was first asked to work there [at Shifa], I was told there was a part of the hospital I was not to go near, and if I did, I’d be in danger of being shot,” he was said in the interview.
“Was it explained to you why that was?” Makler asked the doctor.
“No, but implicit was that it was being used for non-medical purposes,” the doctor replied.
“And did you see anything non-medical, or did you buy the instruction and stay away?” Makler persisted.
“I stayed away, but I saw a few dodgy-looking non-medical characters going in and out all the time,” The doctor replied. “It was a ward leading to a basement. As I said I didn’t go there, so I behaved myself.”
“They would say there could be many other reasons that you would be told not to go to a particular area of a hospital. It’s not unusual,” Makler countered.
“Well, I was welcome everywhere else, and as I say, the doctors and nurses there were very welcoming and very kind, and the hushed tones under which this was said were consistent with all the other hushed tones with which Hamas was discussed. You know, people were genuinely fearful,” the doctor explained. “I cannot emphasize too much the air of collective paranoia that existed there.”
The doctor told Makler that if hospital staff were 10% frightened of possible Israeli airstrikes, they were 90% frightened of being persecuted by Hamas.
Not direct observational evidence, but strong indications there was common knowledge of Hamas presence in, and use of, al-Shifa hospital.
If you consider actual humans to be protected civilian infrastructure, there's this, too, in a recent document by the The Meir Amit Intelligence and Terrorism Information Center, (a separate post from the one referenced in the question, and posted after the question). This is admittedly a pro-Israel source, with lots of information provided by the IDF spokesman, which is not impartial. Of note however is the following:
Yahya al-Sinwar uses children as human shields
When Yahya al-Sinwar, head of the Hamas political bureau in the Gaza Strip, appeared at mass and public events in the Gaza Strip, he was always seen with children nearby. Apparently al-Sinwar, who knew his life was in danger when he appeared in public, also knew that when children were nearby, Israel would not try to kill him because of its ethic not to harm innocent children. For example, on October 1, 2022, Hamas held a mass rally in Gaza City whose theme was “al-Aqsa [Mosque] is in danger.” Al-Sinwar appeared at the rally with two young children at his side (Hamas website, October 1, 2022). On May 26, 2021, a few days after Operation Guardian of the Walls, Yahya al-Sinwar was seen walking the streets of Gaza under tight security. Wherever he was, children were seen close by (Maan, May 26, 2021).
A bunch more pictures are provided, demonstrating a pattern of a guy who knows he's a target, shielding himself with toddlers when overground.
Confirmation of Hamas’ use of the population as human shields
The Gazans do not generally protest the use Hamas and other terrorist organizations make of them as human shields. However, an unusual statement confirming the fact was a post uploaded by a Gazan named Khalil Amar Abu Ibrahim. He criticized the terms of the distribution of financial aid to the families of shaheeds in the Gaza Strip on behalf of the al-Ansar Charitable Association, which excluded children under the age of 15 and residents over the age of 60. He wrote there were dozens of families who lost their children because PIJ terrorist operatives barricaded themselves in their buildings. He personally lost his three children in the same attack, and they had served as human shields to protect where “so-and-so” from the “resistance” was staying (Facebook page of the al-Ansar Charitable Association, June 2, 2023).
These are both drawn from non-IDF sources and pretty convincing.
To sum it up, we have evidence of Hamas strategically shielding themselves with 1) hospitals, 2) humans (toddlers), and 3) populated civilian residences.