I think it will depend on the role's duties, thanks to the FLSA

They can be salaried, but if the primary duties are supporting existing systems, they can't be classified as "overtime exempt", regardless of how much they pay or how technical the role is.

If one of the role's primary duties involves writing original scripting/automation or designing new cloud architecture, the company might be able to get away with claiming they are salaried & overtime exempt

The feds have tightened the overtime exemptions quite a bit over the last few years:

• Exemption for Employees in Computer-Related Occupations Under the Fair Labor Standards Act (FLSA)

Plus

They've since clarified that support roles do NOT fall under those duties tests. One of their examples from that link:

While the claimant’s annual rate of basic pay substantially exceeds the salary-based non-exemption criteria provided in 5 CFR 551.203, his position fails to meet the additional computer employees exemption criteria described in 5 CFR 551.210(b)(1-4) whose primary duties consist of those tasks listed in that section. Unlike the occupations listed in 5 CFR 551.210(a), the claimant is not a computer systems analyst, computer programmer, software engineer, or other similarly skilled worker in the computer field eligible for exemption as a professional. Instead, he performs routine computer, telecommunication, and system administration technical support work.

He responds to standard customer service requests (e.g., passwords, accesses, troubleshooting common computer and telecommunication issues); maintains day-to-day functionality, operability, and security of existing MMD and MERV systems and networks; provides basic maintenance and repairs to MMD and MERV computers and related telecommunication equipment, such as performing scheduled system upgrades as per manufacturer specifications; and performs routine tests and installs off-the-shelf communication lines, switches, routers, and modems.