Perhaps there is none that you are aware of. I hear this all the time, people say there is no evidence and they are just ignorant of the fact that there is a lot of evidence. This is a reflection of the times we live in and shows the apostasy. Before now the problem was more fraud then a lack of evidence. Although the Catholic church goes to great length to substantiate their relics to be sure they are real and not a counterfeit. Recently we had this with the James Ossuary where "James, son of Joseph, brother of Jesus" is cut into one side of the box. The authenticity of the inscription was been challenged. The
Israeli Antiquities Authority (IAA) determined in 2003 that the inscriptions were forged at a much later date.
[5][6] In December 2004, Oded Golan was charged with 44 counts of forgery, fraud and deception, including forgery of the Ossuary inscription.
The time issue is a real problem with the flood. Many places in the middle east have had floods. The city of Ur where Abraham came from has a 10 foot thick layer of flood deposits. Where I live at has flood deposits up to 25 feet thick from the end of the last ice age. The problem is the dates do not always line up with the time of Noah's flood. But if you want flood deposits you can find evidence of flooding just about anywhere you go. Some areas have a major flood every 100 years, there are areas that have a major flood every 1000 years. So if people say there is no evidence of a flood then that is a lie. Everywhere you go you will find evidence of a flood. What is in dispute is the time of the flood and if that dates to Noah's flood or not.
Here on this forum when we were showing the evidence of man like foot prints along with dinosaur prints the natural response was to claim foul and to say they are a forgery. Which of course everyone believe even though there is a lack of verifiable evidence to that effect. That is the case with the Shroud of Turin. Even though the Shroud was made available for a complete scientific investigation the skeptics and scoffers do their best to dispute the results.
Bottom line: Even with the most iron clad rock solid evidence there are still people that will dispute the results. Or they will do as your attempting to do and claim there is no evidence when tons of evidence exists. So I do not know if this is ignorance or fraud to claim that there is no evidence.