Alexa can run multiple timers simultaneously. Just name them differently. Oven, lasagna, bread, one, two, etc. Just ask for time remaining by timer name. Four at once is my personal record.
I’ll use the timer most appropriate to the job. My oven has an analogue timer and if the time is within its range (1 hour or less), I’ll use that. My microwave has a pseudo-digital timer - the time is set with an analogue knob.
I like the mechanical in the stove and the Old Wench likes the digital in the microwave. But since I’m the one voting right now …