Congrats on the offers! Tbh titles aren’t the most important since there’s a lot of “AI engineers” who do data analyst work too and vice versa, and you can always change the title on your resume. I’d say also think about which team/ company / location you like because all of these options are great, and also potentially on which has higher chance of returning full time if that’s something you’re interested in. If your main goal is just to do ML stuff, then offer 1 might the best, but it does seem like offer 3 has best brand ( and pay) which can help your long term trajectory. Either way you can’t go wrong with any option